Off Topic » Problem to login to Unity Forum

i've problem to 'log in' (not create account) into the unity forum, when i try to login the sistem responds:
Unity Community - Error User names must be unique. The specified user name is already in use.
The same credential works fine with the Unity site account (the main page). I've already tried to clear browser cache, change browser (Chrome and Edge), change computer.
Could you give me support ?


Thank You!!!


I didn't find the right solution from the Internet.
References
http://answers.unity3d.com/questions/141...nity-forum.html
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