Nik aaps "Activation process failed because of unknown server error"?

I had to uninstall NIK 7 (computer issue) and then reinstalled NIK 7. Now when I open any NIK application, I get the topic message noted above. Any ideas? thanks in advance. Zoltan

Contact DxO via:
https://support.dxo.com/hc/en-us/requests/new

OK< thanks, will do.

Same problem here, after updating from Win 10 to 11.
Even deinstall / NIK Cleaning Tool / reinstall does not help.
And the support is not answering.
That´s a bad customer service and I am going to claim my money back, most probably.