E_ACT_TOO_MANY_ACTIVATIONS

'Your account has exceeded the maximum number of activations'  on Android devices:

Seems like there is an AdobeDigitalEditions 'counter' . Moving from device to device, installing the ADE to support a ebook reader app, or even wiping an enabled device and reinstalling ADE app & reader seems to increment some 'counter'.

I see discussion of 'deauthorizing' a device but how?  If I uninstall an app on my old phone or tablet how is this communicated to the 'counter'?

That is, If you replace your tablet  & phone with just a new pair how do you make the 'counter' reflect that you only 'authorize' 2 devices? [It seems that MAC & PC use is better understood, better served?].

That I can buy a new book, using an account associated with my email, where I have already 'exceeded' will mean that I cannot read the book on any device [supposing also that all old phones & tablets have had the apps wiped] as I cannot make my new/current device 'authorized' .   What infuriates is that Adobe gets money to facilitate these transactions, but as they get no $ from free app or end users that they leave us to forum chat among other equally helpless forum posters.