It’s not you, it’s us, really sorry for the trouble!
We’re aware of a bug in the app that prevents you from changing the Tx power of your nearables. Luckily, the fix is already on the way, should hit the App Store next week.
The updated version of the app w/ this bug fixed is already awaiting review from Apple, we hope to have it released at the end of this week—or if the review turns out to take a bit longer than usual, early next week.
I’m having the same issue with Proximity Beacons broadcasting Eddystone URLs. I can change the Tx Power value in the Android app (version 1.7.2), but it doesn’t save to the beacon.
(Update with more info: It appears my problem is only when the beacon is broadcasting Eddystone packets; the Tx Power saves correctly when using the Estimote Default. Unfortunately my project requires the use of Eddystone URLS . I’m also having this issue with all 15 of my beacons.)
Would this be the same issue, and if so is there any fix coming for the Android app? Any advice if not?