What exactly is a soft ban, and does it have a time limit?
Jenobi
From time to time, they block an IP address for a short period of time. It's automated but triggered for whatever reason. Things like a DDOS attack would trigger one. In this case it could be triggered by the manifest handshake. Before the most recent issue, I would check back 30 minutes later and it worked again. Maybe it's 10 or 15 minutes, I don't know the number. I suspect if you tried before the time limit it resets the timer.
Most common symptom was telling you that you had an invalid password even though you did not when you try to log back in.