I use Ubunto 20.00. I have a gangileon from 2016. The Gangleon is visible in the ubuntu, but not in GUI list.
The original Ganglion's shipped with the older type CSR dongle. That is no longer supported. Do you have the BLED112 dongle? That is what is required.
These can also be found in some electronics distributor companies local to your country. If you are in Israel,