The KBanking plug-in stores the passwords for some time. If an item of the queue fails e.g. due to a wrong password the others are still sent. So the wrong password is sent again (sometimes). If you have three items in the queue this immediately locks your online banking account. I did not investigate when this happens exactly. I observed that sometimes the password gets invalidated correctly. Reproducible: Didn't try
This was fixed in AqBanking itself: > commit f0c8a65ada0b8387199b028a117df42a1f9ab468 > Author: Martin Preuss <martin@aquamaniac.de> > Date: Sun Sep 5 19:33:35 2021 +0200 > > GUI: Remove bad pin also from password cache. > and contained in AqBanking 5.7.1