Just wondering if you noticed that the "value" parameter is supposed to be a pointer, not the value itself.

The APK is here: https://github.com/EspressifApp/EspBlufi/tree/master/releases You'll need to sideload it on Android (don't forget to disable Unknown Sources on Settings after installing the app). At least in my case I had to download it on my computer and transfer through USB to the phone as it see...