Volca Keys connect with Midi Keyboard

[Luculelas]

I tried to connect my Volca Keys with a M-Audio Keystation 61 es.

- I set both on channel one.
- In the func + Power up settings I enabled 7
- I did an update to 1.03
- And on on the side of the Keys the lights blink when I hit a key so there seems to be MIDI incoming.

But there is no sound, only if I play with the Keyboard on the Volca Keys itself.

Does anyone experience the same or has a Solution to it?

I'm at the end with my latin.