Hello,
have you tried to perform a live reinstall through the cwp script?
I recommend you first to see the logs to identify what is happening, one of these paths will help you, this is the reference link:
https://wiki.centos-webpanel.com/service-log-paths/usr/local/cwpsrv/logs/
/usr/local/cwp/php71/var/log/
and this would be the script, beware before doing this I recommend you make a backup of your server, if it is a vps server contracted with a hosting provider or a kvm request a snapshot of the system just in case, in order to work safely, In theory you can use this script to reinstall cwp with the latest available version.
https://wiki.centos-webpanel.com/how-to-create-cwp-iso-image read carefully before executing any action
regards