Digitakt II currently has no overbridge, only Elektron can fix this. Sorry for the inconvenience lol.
I think this and your other problem are closely related. I’ll find you the thread of people being upset about it, hold on. It’s good for a read.
So, you can still record audio over USB into your daw by selecting digitakt as the audio interface, but you can only record the stereo master track L/R and not the usual overbridge multitrack options. Sorry to be the one to have to give you the information but just know that it’s not something you’re doing wrong.
But they are doing all their testing on the software so it will probably be soon for overbridge, nobody knows exactly when though.