FritzGerlach sent you a PM to help troubleshoot directly
When you enter the Autoblow key, make sure you Copy and paste the key (rather than re-typing it out) to ensure the exact same key is entered and without any unnecessary spaces
Also make sure you exited and closed the Autoblow AI Ultra setup screen on your phone or browser to ensure there is no active connection and so DeoVR is the only one looking to connect to it