I was originally on Ubuntu 20.04 and everything worked fine.
However, I recently installed 22.04 (fresh install) and installed cyberpanel again (v2.3.3) and restored my websites from backup. Their original let’s encrypt certificate (which was part of the backup) worked fine.
However, when it came time to renew the certificate, it failed to do so and reverted to a self-signed certificate. I tried issuing ssl certificates to my websites manually on cyberpanel, to no avail.
I’ve also tried all of the suggestions above also to no avail.
The cyberpanel log shows the following:
I genuinely dont know what to do.
It’s either a bug with v2.3.3 or a bug with the Ubuntu 22 support (the latter is unlikely as the OP is on 20). As everything worked fine prior to the update, and nothing was changed prior to the update, this only broke after the update.