Hi @frqtkshmlk, the path @Judge gave you is the best to contact support, when you do that they’ll run automated tests, send troubleshooting tips and put you in queue for a support engineer, business plans have a chat function and phone support is available on enterprise plans.
An HTTP 500 error is a server error that means that the origin server had an error during the request. Cloudflare does not generate 500s, something is not configured correctly with your hosting provider. I’d contact your hosting provider and look for 500 errors in their logs.
You can confirm by checking your origin directly, curl -v -H 'Host: www.shobaak.com' 123.123.123.123 where 123. is replaced with your origin IP. You’ll get this reply: HTTP/1.1 500 Internal Server Error.