Android project can't be reinstalled on device

Hi, everyone. I’ve finished my project and created build(Android Multi…) with shipping mode and enabled “For distribution” parameter. The problem is that I can’t reinstall the game on my phone(and not only me). Deleting all files of the game(.apk file with installator and deinstallator and content of “UE4 Game” folder) from the phone does not help.

The build is clear, without any warnings or errors, I’ve added my .keystore file(located in /Build/Android) in project settings, everything work fine only for the first time for each of same builds, and I get “App not installed” message when trying to reinstall it. But nothing same for “development” build, it can be easily reinstalled as many times, as you want.

For now installation is manual and I don’t know is that ok(some kind of security) and with Play Store everything will be fine, or that’s a bug. Anyway it looks strange… So, could someone tell me what happens?

P.S. Sorry, if I wrote something wrong, English is not my mother tongue.