I installed the ring control app, registered the ring, then I installed the unlocker app. Every time I unlock it asks me for a one time verification and every time it says my username or password are wrong or do not exist. I found after resetting my password a couple times that the email address is case sensitive (dumb) but even once I've reset the password and verified that it is being entered correctly, it still says that the username or password are incorrect.
The code 205 error above for me is caused by the fact that my phone autofilled my email with a capital letter at the beginning in registration app (keyboard just saw a text field) but with a lower case in the unlock app (keyboard saw an email field). Since the username is case sensitive, this caused it to say the username did not exist.
The password in the unlocker app is entered in a totally unprotected text field, so not only does the text show, but my phone tries to autofill and after I've entered it my phone will then suggest my password in other fields unless I go in and delete it. That is also a problem.
All of this along with the fact that the unlock login is completely separate than the NFC ring and forum login, which is inconvenient. I do understand that sometimes you need two separate services if you can't build your own so this is understandable but no less annoying.
So I'd agree with the original poster that Unlock is simply not working. I trust you'll get this fixed soon.
Thank you.