When I installed worm nest it installed over para ark and now I can't install para ark and it was the android demo version of para ark

yeah i noticed that aswell for some odd reason my phone (samsung galaxy s23 plus) thinks that this new demo is an update for para ark

Something wrong with the package name, I will take a look.

Reminded that you can't transfer saves with APK version

Ok, finally fixed the package problem. It should be fine now, you can install both Para Ark and Worm Nest Plague.