Mi8 - voice match not working

Nov 1, 2018
Yes, after switching to English I could train the voice model.

After that google is asking wheter to make it active.
I confirmed and then it is greyed - as before.

Switching back to my native language google is saying that the voice model is already exisiting - no need to train.
And it is grey...

I cannot make the "ok google" active.