Play store error: can't install app try again, and it still doesn't work, see common ways to fix the problem

Question

Ive released a new app on the play store yesterday and it was published. However when I try to download and install it shows this error: can't install app X try again, and it still doesn't work, see common ways to fix the problem.

I've tried to clear play store cache, data, reset the phone several times. Tried on my Xiami Redmi note 5, also tried on another redmi not 7. Same error happens.

PS: I know that the app is working because installing it through Android Studio works perfectly fine. However when uploading to Play Store and trying to download it does not work. Also I've saw that after I've generated the APK file, it does not work. Ive tried to install using the APK file and it showed: "App was not installed"

Answer 1

Ive ended up solving my problem by removing this line of code on the maniffest file:

android:protectionLevel="signature"

So sad that Google dont have a report to debug this problem... I had a lot of trouble to find it.

Answer 2

After a lot of failed attempts from last 3 days. Today, I figured out that the problem affecting my Android App Version Update – Can't Install Error Message was to change:

compileSdkVersion 'android-R'
buildToolsVersion '30.0.0 rc4'
targetSdkVersion 30

to

compileSdkVersion 29
buildToolsVersion '29.0.3'
targetSdkVersion 29

Now it is working on GooglePlay. Hope it helps. Thanks!