All sites hosted in Cyberpanel are getting connected only on refresh

My sites all wordpress when hosted on Cyberpanel, they don’t get connected the first times users try to access, most of them site took too long to respond Try : Checking the connection ERR_CONNECTION_TIMED_OUT , but this happens only for some users, and not for some users. I tried rebooting the server so many times, tried increasing all the quotas. Something else am missing,.

The sites are ,