Hi @Cedric_Courtens,
it is true, not all USB BT dongles work!
I experimented with several of them. In my Quick installation Type I mentioned these that should do the job:
- LogiLink BT0037
- TP-Link UB4A
- ZEXMTE BT 5.0/5.1 Antenna
My clear recommendation is the ZEXMTE BT Antanna, als in my experience this is the only one which really increases maximum distance.
There is another thing. If the Dial got paired with the Raspberry before inserting the BT USB stick you have to reset rooExtend to the factory default before you can pair a second time. This can be done on the rooExtend webpage you find if you open the IP-number of rooExtend in a browser.
Before the second pairing approach also remove batteries for a short time.
Best DrCWO