meteohub.de

So, I purchased the standard license for the RPi and went through the process to generate an activation code. When I enter said code into the field on the Maintenance page, the activation code field remains populated and System Info still shows "Demo."

Am I missing something?

Looks like activation code is not accepted as it is not matching your system ID.
Please send activation code and system ID to "info(at)meteohub.de", so that I can check.