Hi waah_17, 

Thank you for your message. I'm afraid that you have not provided enough information for us to understand the issue you're experiencing, but once you have registered in a country, you won't be able to switch to another marketplace, and you'll need to create a new account. 

If you need to update the details on the account only, you can do it here. 

I hope this information is helpful. 

Cinthia