I've recently had a similar problem with Spotify. My account was stolen. In part because I did not have 2FA turned on... because the app doesn't offer it for some reason. And, in part, because whoever logged into my account from a different IP and device supposedly didn't trip any of their security measures. So I was never even told that someone took hold of my account until I tried to get on.
It's baffling to me that any popular app wouldn't have 2FA (or any app, for that matter.)