After changing the database name and user

Hi! I was wondering if maybe anyone knows how to solve this.. it still a mistery for me.

I had a website called exmaple.com that was necessary to transfer to another domain, where the path at the root of the server was: /home/example/public_html. There I used WP with a database named: “example_dbx“, and user name: “example_usrx“.

Then I needed to change the domain again to something like example2.com. And the root path changed to: /home/example2/public_html. At the same time the user database were renamed with the a new prefix (something that many shared web hosting companies do by default) to: example2_dbx and the user to: example2_usrx

Now the thing is that I can’t access my website anymore, when I try to do it, it shows a completely blank page and the only way to acess example2.com is creating the same original database and user name in the PhpMyAdmin at example.com.

That means: I need to use an external DB and an external USR to make my website work in other domain.

I tryed to apply the codex steps for “Moving a WP Website” and even the “Changing Domain Name” steps, but none of those worked..

Does anyone knows why this error is happening?
I even tryed to change at the database the root path and it didn’t work.

Thanks a lot!