Can't figure out how to make my MX Master 3 connect to 2.4GHz dongle

I've been having Bluetooth issues with my MX Master 3 (it intermittently disconnects, then reconnects). Haven't been able to find a solution, I think the Bluetooth module in the mouse may be malfunctioning.

I tried to connect the mouse to the 2.4GHz dongle, but the problem is, I've used all 3 profiles (at the bottom) to connect to devices via USB, so I can't seem to find a way to make the mouse connect to the dongle. Is there any way I can 'delete'/rest one of the profiles and set it to the dongle?

And if you have a solution for my Bluetooth problem (I use a Mac), that would be super helpful too. Thanks in advance!