Account deactivation duo to unknown second account

Hi

I have an issue there are starting to be a huge frustration.

I have attempted to talk with the Account Health Specialist in both US and UK multiple times. However, they are not helpful at all…

I recently created my store (a new account), which got deactivated straight away duo to multiple account policy. They claim there are another account with similar information as my. They just tell me to document that this other account are not related to me or maybe is mine, But they don’t give me any information about this second account. E-mail, store name or anything I can investigate to solve the issue.

First questions.

Are the system connected to the https://kdp.amazon.com/? Where I do have another account.

Are the system connected to a normal buyer account?

Can I have multiple accounts in different accounts in other regions? And how do I see this?

Are there any other way I can approach this? And get a clarification of the exact conflict/error? Is it possible to delete the account and start over with e.g. another mail, contact info etc?