Subdomain sometimes down

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? :wink:

Thanks in advance!
Best,
Julian

What are you seeing when it’s down? Is there an error message?

Hehe, thats a good question. This is what appears in the browser:

That’s some sort of connection error.

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.

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