SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Link-ID == false, connect failed
mysql error: Access denied for user 'k3217v3388f4'@'2a03:2900:7:45::2' (using password: YES)
mysql error number: 1045
Date: 28.02.2020 @ 15:23
Script: /board.php?boardid=481
Referer: