Version 3.0 is available. Might be worth to try again. Also do you live in the US? If you haven't done so, you should contact the developer directly (http://www.ninetybytes.com/support). He is very responsive and he might be able to help you.
I just installed it and it works perfectly. I am currently using a G4 transmitter and can see my BG on my receiver, phone, watch, and now Mac. Might be overkill.
No such thing!