Error 525, 520 and ERR_CONNECTION_RESET after pausing cloudflare

Hello,
I started having Cloudflare errors around 3 days ago and after pausing Cloudflare I get ERR_CONNECTION_RESET.
This error happens once in ~5 minutes. Is there any chance it is a Cloudflare error (even though Cloudflare is paused) or its not related to Cloudflare. Im trying to figure out whether its my website/hosting or Cloudflare.

If your website is paused it cannot be Cloudflare because you’re only using CF DNS to reach your server’s ip.