Only black screen when app started(Android)

Only black screen when app started(Android)

pI updated my app recently and start receive many reviews and mails about
app doesn't start at all. As much as i can understand application start
and does something, because ads requests grows. But doesn't show anything
to user. It shows black screen and nothing more. I revert all updates and
put Admob on top View over application. Users can see ads now, but still
can't play game. Problem is nasty, because it doesn't appear for
everybody. For example, i can't have this black screen, so can't fix it.
But many users has it. Application rating comes down, revenue also. Here
is application(update reverted, but still doesn't work): a
href=https://play.google.com/store/apps/details?id=com.debia.sostavslova
rel=nofollowhttps://play.google.com/store/apps/details?id=com.debia.sostavslova/a
Here is application with same update: a
href=https://play.google.com/store/apps/details?id=com.debia.sostavslovo2
rel=nofollowhttps://play.google.com/store/apps/details?id=com.debia.sostavslovo2/a
May be anybody knows why it can happens or how to find what can cause this
problem./p pWhen users uninstall app and install it again it helps, but it
clears all data./p