There is no # after the $$$. SkySafari from my android phone sends $$$:V# when I connect to an Astro-Physics mount. I changed the mount to Classic Meade LX200 and the $$$ is sent but then SkySafari just starts querying for RA and DEC. This works with the AP CP3. I talked to someone who also uses SkySafari on an AP CP3 and he had to switch Bluetooth adapters to get it to work. I don't have the bluetooth he does. I believe if there is a slight delay between the $$$ and :V# the CP3 will work.
I have a serial test program that I wrote and if I send $$$:V# the CP3 does not respond. Why is $$$ being sent is beyond me. Just another case of a programmer not knowing how something really works.
Anyway I got it to work using the telescope set to Classic Meade LX200.