In spite of..
The quality of the Power2max itself is not in question. The app, which is an important partner to the power meter, lends you to believe otherwise. The app works, but 1st do yourself a huge favor and register through the app-portal, not the app itself. The app and the Power2max website have the app-portal pass through. Once you register yourself, you can register your power meter. Then login to the app with your email and password you registered with on the app-portal. I did this and it worked. I was able to update my firmware and even register another power meter. The app seems to work fine now, and though both firmware updates stalled at times, I just killed the app and started over. Also the iPad app seems better than the iPhone app, but the iPhone did install the updates. Good luck.