This is my mates app. He spent days trying to investigating how he could be violation of their terms and has not been able to get a specific reason from Googl

This is my mates app. He spent days trying to investigating how he could be violation of their terms and has not been able to get a specific reason from Google. It appears to me that this must be a "false-positive" for a harmful app. But there isn't much he can do about it.