Snips.ai - add on audio config has no audio devices

Hi,
I’d like to try the snips.ai hassio addon but I cannot select any audio devices in the addon config:

The hassio hardware list shows the USB microphone I’d like to use (as well as the integrated sound card headphone/mic) - but not under audio:

I’m running Hassio on Ubuntu 18.04 on a NUC-like x64 mini PC.

Any ideas?

Thanks
Jochen

Might be related to https://github.com/home-assistant/hassio/issues/926

Solution is apparently to reinstall hass.io completely from scratch: https://github.com/home-assistant/hassio/issues/926#issuecomment-475507067

:scream: