Hi @Indot Minus ,
Did you go through the top questions asked over here:
https://developer.microsoft.com/en-us/store/register
For any issues, you can check the support over here:
https://developer.microsoft.com/en-us/windows/support
or ask in the dedicated Microsoft Store forum over here:
https://answers.microsoft.com/en-us/windows/forum/windows_10-windows_store
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(If the reply was helpful please don't forget to upvote or accept as answer, thank you)
Best regards,
Leon