So this is tricky. Here is a comment from a Reddit thread about fixing the date/time:

nvm I got it working, I just installed app starter using their apk then in the app I went to the Settings tab then ticked Show System Apps. Then I went to the Apps tab and clicked on the app called Settings, with the gear icon, then I scrolled down clicked on system clicked on date and time and ticked "use network-provided time". like seriously Facebook your a multi billion dollar company and you cant add a simple date and time feature?

Anyway, I have added app starter to SideQuest. If you want to give it a shot here it is:

https://sidequestvr.com/app/90

Please let us know if this works, if so you might be helping others too.

Edit: Source - https://www.reddit.com/r/sidequest/comments/rf4f7f/sidequest_app_launcher/hp3yjiy?utm_medium=android_app&utm_source=share&context=3