Infinite login when i want to contact with support or change enroll type

Hello. I want to change my enroll type, but when i click on "Switch to organization membership" the page updates to login and this is infinite process (i filled login + password, but this redirected me to login back all the time).

What i need to do? I already have D-U-N-S number.

Infinite login when i want to contact with support or change enroll type
 
 
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