in app browser gives oAuth errors

Hello! When users try to sign in through oAuth methods in some in app browsers (Facebook in this case, altho Facebook Messenger seems to work fine for somer reason), they get a dissalowed_useragent from Google and a "this app is not active" from Facebook. Using Supabase for auth but don't think there's anything that can be done on their end. Has anyone else run into this? If so how did you solve it? Is there anything I can do other than try to detect in app browsers and ask users to open it in their real browser? If so, what's the best way to do so? Excuse the random languages in the screenshot lol, attached just as example.