DigitalOcean is an unmanaged service; you should contact your system administrator (the person with root access to your virtual private server).

Your sysadmin can follow these guides for troubleshooting assistance:

https://www.digitalocean.com/community/tutorials/how-to-troubleshoot-common-http-error-codes

https://www.digitalocean.com/community/tutorials/how-to-troubleshoot-common-site-issues-on-a-linux-server

Use the DO panel and SSH to diagnose and resolve the issue.

Contact your hosting provider

Hi,

I suppose that first of all important to find out if a site is down for real or if it’s just for you. Please try it first: https://besthostadvisor.com/check-if-website-is-down/

If the website is down for everyone try to restart the server or describe in more detail what kind of error did you get.