Error 504 (some pages are down)

Error 504 Ray ID: 52ee5bd14deb72ff • 2019-11-01 13:54:05 UTC

Gateway time-out

how to fix it ?

and also is there any (support live chat) to fix it faster ???

5xx servers generally come from your host. That’s a good place to start.

I have a guide on how to stop DDoS attacks (if that is what this is), it’s a bit advanced and in-depth. https://github.com/scaredos/cfresearch
The best bet is to remove your web server from these processes as much as possible if the web server cannot handle it. I recommend caching any and all static content that you do not update often. If you update a specific page every day or hour, I would not recommend caching it (although you could set the cache to renew every hour)