Can you provide screenshot to back up this claim? And I understand you didn't use the account at all, you left it untouched and few days ago, you checked it out of curiosity and found it to be locked?
Yep.
Here are the screenshots of what happens when I try to login or reset password:

I'll try to notify their support about this and get them to take a look into it from their side, it's probably their automated system locking you out again instead of them intentionally doing so. Am I correct that currently there is no fund left on that account?