Seller account connect to personal shopping/prime account

Hello, After I created a Seller account with a unique email adress and my only phone number it connected/linked it to my personal shopping/prime account and it automatically changed my personal shopping/prime account to my new Seller account email.

and when I tried to change my personal account email back to my personal email address it changed the seller account automatically to my personal email address as well.

Any idea how to resolve this ?

Thanks