Seems to have a compatibility issue with Android 6 and higher. Stucks there with connecting to the cloud probably on BLE stack. With Android lower than 6 I didn't have any issues and it was pretty fast and easy to claim a device.
Crashes often Selecting your connected device crashes the app. The app should provide feedback on claiming process or led modes. Icons for device are generic. Looking forward to improvements. Needs auto reconnect.
Fix critical issue where devices wouldn't connect to Particle cloud