Enfold and PHP 8.*

I tried to update PHP today, and had several issues with Enfold.
1. Despite repeated manual requests to get the current version of Enfold through the dashboard, I kept getting the message that I had the most recent version and that it was 4.8.8. This is obviously not correct.
2. I double-checked the license code, and found that the one the site was using did not have current support. I changed to a code that does have currently paid-up support, and rechecked for the Enfold update, several times. I still got the message that I had the most recent version at 4.8.8.
3. I checked the main page of the site and discovered that it was showing what appeared to be a vertical tablet-sized layout.
4. I tried deactivating plugins, and the layout would not change back to normal (stretched).
5. I manually downloaded Enfold 5.1.2 and updated the theme. The site was still using the bad layout.
6. I reset PHP back to 7.4, and the site came up in its normal layout.

I checked the settings from the 7.4 PHP configuration, and everything appeared to be the same for PHP 8. I didn’t see any PHP errors. Is there some setting new to PHP 8 that wasn’t in PHP 7.4 that Enfold needs to have activated?