Bluetooth Mouse Connection Not working

[Dididaddy]

I have Logitech M720 bluetooth mouse. It works fine on Mac Air (M2). I have Mac Mini Pro and when I first got it, I used dongle to navigate through the initial settings. But now it won't connect to built in bluetooth and only works with the dongle. Do I have to somehow remove the dongle driver? Any help appreciated. Thanks.

 

[gwang73]

Did you change the paired device on the mouse when you switch computers?

The mouse can pair with 3 computers on BT or 1 dongle and 2 BT computers. Each device has to be paired with its own device number on the mouse.

 

[Dididaddy]

Did you change the paired device on the mouse when you switch computers?

The mouse can pair with 3 computers on BT or 1 dongle and 2 BT computers. Each device has to be paired with its own device number on the mouse.

I kept trying to connect to either channel 2 or channel 3. But pairing with channel 1 (previously with dongle) worked. Thanks!