SMS codes are never arriving. I just tried today. The last time I tried they never arrived either. I do not have (and do not with to have) an authenticator app.
Related:
I have not had issues with any other web apps. If this is not an Alpaca bug, then Alpaca should strongly consider switching to a different SMS provider.
If you’re using a common provider that most people use, then there must be an Alpaca issue, because I literally never have issues with any other apps, only with Alpaca.