Theme doesn't check for newer versions

Hi, I currently have Enfold 4.7.1 running on WordPress 5.4.1 thru an Enfold child theme.

The Envato private token works and validated (I actually tried to create a new one and update the new token on Enfold child theme again).

The theme update status (under Enfold Child Theme Options page) shows:

“No Updates available. You are running the latest version! (4.7.1)
Check Manually
Your PHP version: 7.4.4
Last successful check was on 2020/05/25 11:45.”

And “check manually” sends me to WordPress Updates page, with nothing new to offer.

I moved the site from shared hosting on Apache to a VPS hosting on LiteSpeed, so I don’t know if the move messed something up with the update process/scripts.

Unfortunately, the site owner doesn’t allow me to provide login credentials to additional developers, so I’ll have to check stuff myself…
Any ideas what kind of stuff should I start checking?

Many thanks!