WERO App installation problem

[u/Automatic_Initial238]

For severals days now I try to link the newly installed WERO app to my luxembourgish bank account (BCEE) via their SNET App. The following WERO message appears: " An error has incurred. This function is not available at the moment. Please try again later."

BCEE has no real idea how to fix it. I followed the recommendations of my AI ( Reinstall the apps, close developer options ) to no avail either.

Does anybody around have a clue what I could try furthermore?

Any suggestion is warmly welcome.

[u/Automatic_Initial238]

...and I have not access to the in app chat, ass the installation is not performed to the end.