Hello, I have ISPconfig3 everything work fine all service running but few days ago I cannot access all site on my server I have done these steps below. I use Digitalocean’s DNS (the vanity DNS), all domains pointed to my server. All services is running, no abnormal log. Firewall is enable (port 80/443 is allowed) ISPconfig on port 8080 and all applications on 8081 is work fine. All Let's encrypt certificates are renewed. Only vhost files has problem I cannot access all sites on this server. How can I fix this? I also attache my sample vhost file Thank you.