You need to install it to secondary accounts using the Mobile VR station method shown in the installation video.
Installation via SideQuest does not work correctly on multiple accounts, and ADB installation requires additional configuration.
Don't hesitate to reach out onDiscord if you need one-on-one assistance!
Note: I've removed your two duplicates of this comment.
Hi thank you for the reply. The tutorial doesn't work as it says "App not installed as package appears to be invalid" during the installation process in Mobile VR Station. Should I reach out to you in discord or do I just do something wrong? I followed the video tutorial exactly.
Edit: so it worked, but I needed to go to itch.io login and download the latest APK. It didn't work with the GitHub one