I make an application to the customer.
He provided me with a project, I modified it, from 1st to 5th version versionCode increased and sent to the client, from 1st to 5th apk the client himself poured for publication in the market.
We live with a client in different cities.
Today, the client told me to pour the new apk on beta into the market myself, it turned out that versionCode from 5 (working and uploaded) immediately went up to 8th (beta) of apk, added 1 permission to access the camera and I included proGuard on the project files when compiling (on the 5th version there was no obfuscation).
When loading, I did not write anything in the "what's new" field. The application has a rating of 2.7 in the market (as it is with a bunch of bugs, but I fix it).
After processing the apk google play site gave the following message: 
Began to understand, Google has updated the "Center for Developing Rules - Malicious Behavior"
(link to the center of the rules) in May 2017.
There is nothing sensible found.
The article on Habré in general scared that now I’m afraid to do something extra, because the client is paying, and the application has 8,000 downloads.
A big request to those who came across - help advice.
For the first year I see this behavior of Google