diff --git a/Dockerfile b/Dockerfile
index 640bc57..23f26d4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -36,16 +36,24 @@ COPY apache.conf /etc/apache2/sites-available/000-default.conf
 RUN chown -R www-data:www-data /var/www/html \
     && chmod -R 755 /var/www/html/public
 
-# Setup cron for client expiration and traffic limit checks (runs every hour)
+# Setup cron jobs
 RUN echo "0 * * * * www-data cd /var/www/html && /usr/local/bin/php bin/check_expired_clients.php >> /var/log/cron.log 2>&1" > /etc/cron.d/amnezia-cron \
     && echo "0 * * * * www-data cd /var/www/html && /usr/local/bin/php bin/check_traffic_limits.php >> /var/log/cron.log 2>&1" >> /etc/cron.d/amnezia-cron \
+    && echo "*/3 * * * * root /bin/bash /var/www/html/bin/monitor_metrics.sh >> /var/log/metrics_monitor.log 2>&1" >> /etc/cron.d/amnezia-cron \
     && chmod 0644 /etc/cron.d/amnezia-cron \
     && crontab /etc/cron.d/amnezia-cron \
-    && touch /var/log/cron.log
+    && touch /var/log/cron.log \
+    && touch /var/log/metrics_monitor.log \
+    && touch /var/log/metrics_collector.log
+
+# Make monitor script executable
+RUN chmod +x /var/www/html/bin/monitor_metrics.sh
 
 # Create startup script
 RUN echo '#!/bin/bash\n\
 service cron start\n\
+# Start metrics collector on container startup\n\
+/bin/bash /var/www/html/bin/monitor_metrics.sh\n\
 apache2-foreground' > /start.sh \
     && chmod +x /start.sh
 
diff --git a/README.md b/README.md
index 7366d57..07f17cd 100644
--- a/README.md
+++ b/README.md
@@ -31,12 +31,10 @@ cp .env.example .env
 # For Docker Compose V2 (recommended)
 docker compose up -d
 docker compose exec web composer install
-docker compose exec -d web php bin/collect_metrics.php
 
 # Or for older Docker Compose V1
 docker-compose up -d
 docker-compose exec web composer install
-docker-compose exec -d web php bin/collect_metrics.php
 ```
 
 Access: http://localhost:8082
@@ -143,6 +141,26 @@ curl -X POST http://localhost:8082/api/servers/1/restore \
   -d '{"backup_id": 123}'
 ```
 
+### Automatic Monitoring and Metrics Collection
+
+**Metrics collector runs automatically** on container startup and is monitored by cron every 3 minutes. If the process crashes, it will be automatically restarted.
+
+Check metrics collector logs:
+```bash
+docker compose exec web tail -f /var/log/metrics_collector.log
+```
+
+Check monitoring script logs:
+```bash
+docker compose exec web tail -f /var/log/metrics_monitor.log
+```
+
+Restart metrics collector manually:
+```bash
+docker compose exec web pkill -f collect_metrics.php
+# It will be auto-restarted within 3 minutes by the monitoring script
+```
+
 ### Automatic Client Expiration Check
 
 **Runs automatically in Docker container** every hour to disable expired clients.
@@ -281,4 +299,9 @@ migrations/          - SQL migrations (executed in alphabetical order)
 ## License
 
 MIT
+
+## Support the Project
+
+If you find this project helpful, you can support its development through a donation via Tribute: https://t.me/tribute/app?startapp=dzX1
+
 # amneziavpnphp
diff --git a/bin/collect_metrics.php b/bin/collect_metrics.php
index 0f37455..49f4acb 100644
--- a/bin/collect_metrics.php
+++ b/bin/collect_metrics.php
@@ -21,8 +21,21 @@ date_default_timezone_set('UTC');
 // Enable error logging
 error_reporting(E_ALL);
 ini_set('display_errors', 1);
+ini_set('log_errors', 1);
+ini_set('error_log', '/var/log/metrics_collector_errors.log');
 
-echo "[" . date('Y-m-d H:i:s') . "] Metrics collector started\n";
+// Write PID file for monitoring
+$pidFile = '/var/run/collect_metrics.pid';
+file_put_contents($pidFile, getmypid());
+
+// Register shutdown function to clean up PID file
+register_shutdown_function(function() use ($pidFile) {
+    if (file_exists($pidFile)) {
+        unlink($pidFile);
+    }
+});
+
+echo "[" . date('Y-m-d H:i:s') . "] Metrics collector started (PID: " . getmypid() . ")\n";
 
 // Main loop
 while (true) {
@@ -79,6 +92,12 @@ while (true) {
         
     } catch (Exception $e) {
         echo "[" . date('Y-m-d H:i:s') . "] FATAL ERROR: " . $e->getMessage() . "\n";
+        error_log("[FATAL] Metrics collector error: " . $e->getMessage());
+        echo "Retrying in 30 seconds...\n\n";
+        sleep(30);
+    } catch (Error $e) {
+        echo "[" . date('Y-m-d H:i:s') . "] CRITICAL ERROR: " . $e->getMessage() . "\n";
+        error_log("[CRITICAL] Metrics collector error: " . $e->getMessage());
         echo "Retrying in 30 seconds...\n\n";
         sleep(30);
     }
diff --git a/bin/monitor_metrics.sh b/bin/monitor_metrics.sh
new file mode 100644
index 0000000..3af4f06
--- /dev/null
+++ b/bin/monitor_metrics.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# Monitor and restart metrics collector if it's not running
+# This script checks if collect_metrics.php is running and restarts it if needed
+
+SCRIPT_PATH="/var/www/html/bin/collect_metrics.php"
+LOG_FILE="/var/log/metrics_monitor.log"
+PID_FILE="/var/run/collect_metrics.pid"
+
+log_message() {
+    echo "[$(date '+%Y-%m-%d %H:%M:%S')] $1" >> "$LOG_FILE"
+}
+
+# Check if the process is running
+is_running() {
+    if [ -f "$PID_FILE" ]; then
+        PID=$(cat "$PID_FILE")
+        if ps -p "$PID" > /dev/null 2>&1; then
+            # Check if it's actually our script
+            if ps -p "$PID" -o args= | grep -q "collect_metrics.php"; then
+                return 0
+            fi
+        fi
+    fi
+    return 1
+}
+
+# Start the metrics collector
+start_collector() {
+    log_message "Starting metrics collector..."
+    /usr/local/bin/php "$SCRIPT_PATH" >> /var/log/metrics_collector.log 2>&1 &
+    echo $! > "$PID_FILE"
+    log_message "Metrics collector started with PID: $(cat $PID_FILE)"
+}
+
+# Main logic
+if is_running; then
+    log_message "Metrics collector is running (PID: $(cat $PID_FILE))"
+else
+    log_message "Metrics collector is not running - starting it"
+    start_collector
+fi
diff --git a/inc/VpnClient.php b/inc/VpnClient.php
index 1cf7732..58727ca 100644
--- a/inc/VpnClient.php
+++ b/inc/VpnClient.php
@@ -40,9 +40,9 @@ class VpnClient {
     public static function create(int $serverId, int $userId, string $name, ?int $expiresInDays = null): int {
         $pdo = DB::conn();
         
-        // Sanitize client name (replace spaces and special characters)
+        // Sanitize client name (replace only spaces with underscores, allow any other characters including Cyrillic)
         $name = trim($name);
-        $name = preg_replace('/[^a-zA-Z0-9_-]/', '_', $name);
+        $name = str_replace(' ', '_', $name);
         
         // Get server data
         $server = new VpnServer($serverId);
diff --git a/public/index.php b/public/index.php
index e7335d1..034bf39 100644
--- a/public/index.php
+++ b/public/index.php
@@ -597,7 +597,16 @@ Router::get('/clients/{id}/download', function ($params) {
         }
         
         $config = $client->getConfig();
-        $filename = preg_replace('/[^a-zA-Z0-9_-]/', '_', $clientData['name']) . '.conf';
+        
+        // Check if name contains non-Latin characters
+        $hasNonLatin = preg_match('/[^a-zA-Z0-9_-]/', $clientData['name']);
+        if ($hasNonLatin) {
+            // Use user_(client_id)_s(server_id).conf format for non-Latin names
+            $filename = 'user_' . $clientData['id'] . '_s' . $clientData['server_id'] . '.conf';
+        } else {
+            // Use client name for Latin characters
+            $filename = $clientData['name'] . '.conf';
+        }
         
         header('Content-Type: application/octet-stream');
         header('Content-Disposition: attachment; filename="' . $filename . '"');
diff --git a/templates/servers/view.twig b/templates/servers/view.twig
index d1a8a8d..360acf5 100644
--- a/templates/servers/view.twig
+++ b/templates/servers/view.twig
@@ -95,8 +95,8 @@
       <h3 class="font-bold mb-4">{{ t('clients.create') }}</h3>
       <form method="POST" action="/servers/{{ server.id }}/clients/create" class="space-y-3" id="createClientForm">
         <div>
-          <input name="name" placeholder="{{ t('clients.name') }}" required class="w-full px-3 py-2 border rounded" id="clientName" pattern="[a-zA-Z0-9_-]+" title="Only letters, numbers, underscore and dash allowed">
-          <p class="text-xs text-gray-500 mt-1">Spaces and special characters will be replaced with underscore</p>
+          <input name="name" placeholder="{{ t('clients.name') }}" required class="w-full px-3 py-2 border rounded" id="clientName">
+          <p class="text-xs text-gray-500 mt-1">Spaces will be replaced with underscore. All characters allowed including Cyrillic.</p>
         </div>
         <div>
           <label class="block text-sm text-gray-600 mb-1">{{ t('clients.expiration') }}</label>
@@ -304,12 +304,12 @@ document.addEventListener('DOMContentLoaded', function() {
   const form = document.getElementById('createClientForm');
   const clientNameInput = document.getElementById('clientName');
   
-  // Auto-sanitize client name on input
+  // Auto-replace spaces with underscores
   if (clientNameInput) {
     clientNameInput.addEventListener('input', function(e) {
-      // Replace spaces and special characters with underscore
+      // Replace only spaces with underscore, allow all other characters including Cyrillic
       let value = e.target.value;
-      let sanitized = value.replace(/[^a-zA-Z0-9_-]/g, '_');
+      let sanitized = value.replace(/ /g, '_');
       if (value !== sanitized) {
         e.target.value = sanitized;
       }