Apple Developer Program

Hi everyone,

I've been trying to sign up for Apple developer membership as an individual for days and I always get this message.

For one or more reasons, your enrollment in the Apple Developer Program could not be completed.

Apple support could not help me and could not tell me the reasons.
I tried it from different devices, with different IP addresses and new AppleIDs, nothing helped.
Did any of you have the same experiences and could solve them ? If yes, would you be so kind and share your solution with me.

Best regards and thanks for your help in advance
Mikel