Message at startup "Invalid encryption of credentials"

Hello,

I need some help and have a specific question, which is:
Where in the ASG-RemoteDesktop SQL database are the private credentials stored ?


The whole story ... 

All ASG-RemoteDesktop 2018 users are receiving a message or warning at startup of the application. The message says the following:

Transcription of the attached image:
---
Invalid encryption of credentials
There are on or more credentials with invalid password encryption.
The credentials will be marked in the navigation window. You have to
reset the passwords to use it again.
---

All users working on the same database receive this message at startup. We find this it odd because it's related to private credentials not public credentials. My colleagues and I managed to identify credentials because of descriptions of the credentials found in the error log of ASG Remote Desktop 2018. See printscreen below of the error log and the warning message listing the credential ID and the credential description;


A couple of users had to remove and create their credentials again. This approach seems to work. Because when we remove corrupt credentials, the list of credentials mentioned in the error log gets shorter. We are now left with credentials that we can not link to a specific ASG-RemoteDesktop user. We tried to look into the SQL database searching for the credential ID and the description of the credential. But we did not manage to find them. So we can't find them in the database and the description is too generic to identify an ASG-RemoteDesktop user. 

The version of ASG-RemoteDesktop 2018 we are using is v11.0.5865.0.
The database is stored on a SQL server 2012.

The question I want to ask is:
- Where in the ASG-RemoteDesktop SQL database are the credentials stored ?

We hope to link it to the owner of the private credential and contact him or her with the request to remove those corrupt accounts.

Thank you in advance.

Regards, Patrick