Weird one, here. It's been a little while since I'd used my Gear VR, and upon booting up my Note 4, I had some updates. Cool.
However, the setup process wanted me to log in with my Oculus account. Okay. But upon entering my E-mail and password, it tells me my username and password are invalid. But they aren't. I just used them to log in on the Oculus website, no problem. I changed my password to something else. Same thing; I can log in just fine on the website, but the app continues to insist the combination is invalid. The internet connection is working fine.
Any ideas, C?