Load instruments vom Media Bay to Pads in Groove Agent 5.1.120

I use Groove Agent together with Cubase 12.0.70.

Instruments, Styles, MIDI selected in the Media Bay of Groove Agent 5 are not shown in the Prelisten / Edit area and cannot be played there.

Moreover they cannot be copied to an Instrument Pad.

I already repeated installation of Groove Agent 5 as well as the 5.1.20 update withou any improvement.

Does anyone have an idea?

Greetings from China!