Magic Mouse 2 stops working randomly

I have a brand new 27" iMac i5 3.4 Ghz that I ordered with a 1TB SSD Upgrade & 16GB memory. I've had it for about a week and the Magic Mouse will just stop working. The arrow is still visible on the screen but you can't move it or click on anything! I added that I have a 1TB SSD because maybe that has something to do with the bluetooth antenna or interaction with the SSD itself. I've read that this is a problem with the iMac Pros?!?

I may return this iMac if something as simple as the mouse dont work.

Thanks for any help!