[jarm0]

I'm the OP and thank you for thinking along with me here. As stated in numerous replies already then I totally agree that I could have done better in terms of testing things out - of course, there's always room for improvement in that regard. There was a deadline set by Google (again, first time I heard about it was at 18th of August, not before), change seemed trivial at time and since app worked on an old Android version as it was before then I didn't expect it to fail so miserably. Again, I'm not a seasoned Android dev, but have 15+ years of experience in software development in general so I have some expectations how things will work or not and what to expect and be afraid of. I really didn't know that "best practice" is to do a staged roll-out of "99.99999999%" to have a way of partial "yank" possibility of the latest release. To find out that there's no way to cancel/delete a latest release to fall back to previous working version was just something I did not expect in my wildest dreams (I guess this is something you only learn during situations like these). Yes, everyone can blame me for not testing every functionality with every Android version and I do the same, but please open your eyes and understand that the way releases are currently handled by Play Store is not a sane person would do outside of Play Store. Everyone will have a problem like this at one point and I do hope that this article will and thread in here will lower the number of developers experiencing situation similar to this.