| The site doesn’t open |
systemctl status flock / docker compose ps. Is port 80/443 (or 4000/8080) open in the provider’s firewall? |
| Certificate wasn’t issued |
The domain’s A record must point at this server and port 80 must be reachable, then rerun: sudo certbot --nginx -d chat.example.com --redirect (Docker: docker compose logs caddy) |
| Camera/microphone blocked in the browser |
The web app must be opened over https:// |
| Calls connect but there’s no sound/video |
Add a TURN relay |
| File upload fails for large files |
The limit is in App settings. Behind Nginx, client_max_body_size must be a bit larger (the installer sets it from your answer); in Docker, edit apps/client/nginx.conf |
| Apps say the server isn’t reachable |
Use the full address including https://, and make sure CORS_ORIGIN is * |
| Something else |
Logs: journalctl -u flock -n 100 or docker compose logs server |
