I just got my Mantooth in the mail. I got the 67003. I was able to pair the modules to the phone. When I use the app I can pair the modules but when try to start session the app just crashes. I tried rebooting my phone and uninstalling and reinstalling app but the problem persists. I have an Android phone running 4.4. Hopefully someone from Yellow Jacket can help out. The hardware looks nice but it being crippled by the app.