SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Link-ID == false, connect failed
mysql error: Access denied for user 'HTO01FLBUQTS'@'c4aweb29.aul.t-online.de' (using password: YES)
mysql error number: 1045
Date: 17.07.2018 @ 17:13
Script: /wbblite/misc.php?action=faq&sid=35c1cf11dc43b5955ab88307e180b7d6
Referer: