Software does not show any WiFi / Existing Network

Hi
I’m trying (again) to setup Goliath using “Existing Network”.

But it never shows any of the existing networks:

And yes there are several 2.4Ghz WiFi.

Is this option working for anyone or is only “Goliath self-hosted network” functional?

Thanks for your help!

BR
Christian

Are here any news? I have the same problem.