Did you have it working previously and now it isn’t? I use the 2.4Ghz dongle exclusively, never even bothered trying bluetooth. I did find that my placement was not great though, so first time I tried using it, it was horribly laggy/unresponsive. Turned out I had it too near other interference, popped the dongle in the charging cradle and moved that to the front of my setup and no further problems.
Eneloops are awesome 🙌