Installation and server related problems

Newbie here. 

I installed the official H5P (v 1.15.7) plugin to my wordpress instalation (v 6.4.3). Everything seems to work fine until I attempt to add new content. When I try to install from the create content dropdown, I receive the error, "Validating h5p package failed. Your PHP version does not support ZipArchive." However, I am on PHP version 8.1.16 so I don't think that error is accurate. 

Dear Community,

I have created very large interactive books with numerous course presentations. I used the Lumi desktop software to create them. Yesterday I opened another student's course presentation with Lumi. 

Problem: now all (!) my own Course Presentations (inside all my interactive books) are no longer displayed. (Screenshot attached) I see nothing but white boxes. It seems to me that I have received a different/newer version of the course presentation?!

Hello. My Moodle installation has been giving me the following message lately, which appears to be from H5p "missing site uuid or hub secret. Please check your hub registration". Do you know how to delete that message?