Can't restore backup on new domain

Im trying to restore a old backup on a new domain and host ... but is not working and its so anoying every time i get this errors ..

There appears to be an error with the database.
If you are seeing this page, it means there was a problem communicating with our database. Sometimes this error is temporary and will go away when you refresh the page. Sometimes the error will need to be fixed by an administrator before the site will become accessible again.

You can try to refresh the page by clicking here

OR THIS

Your settings could not be read by IP.Board. This is a fatal error and IP.Board cannot function while this issue persists.

This issue is generally caused by changing your character set in the ACP to one that does not support data stored in the rest of your settings, or by restoring a database backup/completing a server transfer and importing your database tables using the wrong character set or collation. You should contact IPS Technical Support for further assistance.