I have tried google authenticator, microsoft authenticator, and aegis. None of them work. I have the same authenticator keys on my old phone still thankfully but for each, the app on graphene OS stop generating correct codes. Sometimes they match but mostly they don't. It's weird though, like I have 2 codes I added last night, which worked when I added them. In the morning only the second code matched. Then a few minutes later both of them didn't match. Then only the second code matched again. Then they're back to not matching. I tried scanning the same QR code again a few times and typing in the code and I got multiple entries that were consistent with themselves but not consistent with the desynced one. Waiting to see how these will desync.