Access denied for user 'marie1303286_1kuw1n'@'%' to database 'marie1303286_1kuw1n'
The database server could be connected to (which means your username and password is okay) but the marie1303286_1kuw1n
database could not be selected.
marie1303286_1kuw1n
have permission to use the marie1303286_1kuw1n
database?username_marie1303286_1kuw1n
. Could that be the problem?If you do not know how to set up a database you should contact your host. If all else fails you may find help at the WordPress support forums.