Troubleshooting My Breezing Tracker won’t turn on. My measurement won’t start. My measurement won’t start, even though the Bluetooth connection is working. I inserted a fresh (unused) sensor cartridge, but I still get an error message telling me to insert a fresh sensor cartridge. I get an error message when my iPhone/iPad tries to connect with the Breezing Tracker. The App is not working on my iPad. What should I do? I have an iPad. How do I find the Breezing app in the App Store?