Hello dear Community,
I have a subdomain tools.people-excellence.eu. This subdomain contains a Wordpress page based on Divi Themes. I registered it in Cloudflare in the DNS as a CNAME Domain (see Screenshot).
This is the list of plugins I have on the wordpress page:
Akismet Anti-Spam
Bloom
DSGVO Pixelmate
Header Footer Code Manager
Insert Headers and Footers
Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue
Newsletter2Go
Really Simple SSL
Site Kit von Google
WP-Optimize - Clean, Compress, Cache
Yoast SEO
Sometimes this domain is down and I do not know why. I have switched off the DNS from Cloudflare and it worked, so the error needs to be in Cloudflare.
Anybody has an idea what could be the problem? Or even better: a solution?
The 502/504 errors are caused by a problem connecting to an upstream server - meaning your server is trying to initiate a process and this fails to work as expected or times out. In most cases of 502 / 504 errors, back-end servers are not communicating correctly. When this happens, you will see color page with Cloudflare branding and the Error 502 Bad Gateway or Error 504 Gateway Timeout. Review this Community Tip for fixing 502 or 504 gateway errors.