Need expert in Centos Web Panel control panel and optimizing of server

We recently installed Centos Web Panel Pro on your dedicated server. We moved several domains (websites) over but we have experienced some issues. The biggest issue is we constantly are getting 504, 525 or other 5xx errors/time outs for our websites when the connections to our server increases. The actual CPU load is low and not the reason. We have a medium traffic website. I believe this is related to PHP-FPM or other Apache or Nginx configuration settings. When the server has more users/connections it crashes. The application on the server that uses the most resources is a chat application that uses PHPFPM7.2 and MariaDB 10.5 This problem did not occur on our old server with similar hardware specs. The only difference is this server has CentosWP and perhaps the configuration is not set correctly. Perhaps it is the PHP-FPM settings or the [login to view URL] settings. or something else? We need someone good at checking to fix this issue or else I am going back to Cpanel which doesn't have this issue. However, I would like to try to keep this CentosWP and give it one last chance. There are other issues on this server as well: - email is not sending out - server hardening - our cron jobs are not using the proper PHP version with ioncube loader (will explain more about this later) - maybe some other small issues. - fix issue of logging into phpmyadmin from dashboard. (change phpmyadmin password) Most important is having experience with CentosWP! Payment and full review given upon successful completion.