Personal info not saving and intro constantly repeating nc

Hi, I just installed nc20 using the zip file and I can log in as admin but after trying several times it will not save any personal info, and the intro splash constantly comes up with every page change.

I’ve installed nc20 on my ubuntu server 20.04.2, with php 7.4 and apache 2.4.

Anybody else experienced this problem?
Thanks for any help!