If you have CSf enabled, temporarily disable it, as you might have blocked the licensing server.
Then login via SSH to the CLI.
systemctl stop csf
systemctl stop lfd
cd /scripts
./update_cwp
Then Start csf again:
systemctl start csf
systemctl start lfd
--
If that doesn't work, and If you want, PM me with your servers IPv4.
I'll add it under our reseller account until you hear back from support.