I cant open the app in my phone because google play protect says that he dont find the creator of the app
Are you seeing this notice or one like it?
Users get the message “this type of file can harm your device…” when they have GooglePlay protect enabled. The ONLY way to handle the message is to tell potential users to ignore the advice and install anyway. Sorry, you are battling Google security policy.
The advice available is:
Google’s security attempts to protect users. They use PlayProtect as part of that security.Applications Blocked by Play Protect
and How to resolve the warning "Play Protect" while installing an app?
PlayProtect goes into action when users attempt to load apps that do not originate at the GooglePlayStore. Not just your app, everyone's apps ... this is the message everyone receives who does not load an apk to their Android from the PlayStore.... Users can say OK and install or Cancel.