Need to upgrade PHP

I am running two instances of Omeka Classic 3.2.1 on Reclaim hosting. My newer instance is running PHP 8.1, but my older one is running PHP 8.0

I don’t actually know how to update PHP for Omeka on Reclaim, this is the first time it’s been necessary. Can someone point me to some documentation?

Happy New Year, Leslie.

Here’s the link: https://support.reclaimhosting.com/hc/en-us/articles/4405522991255-Changing-Your-PHP-Version-in-cPanel