I use an open source SPAM call blocker (Yet another call blocker), which works fairly OK by querying a local spam phone number database. Recently Google Play decided to display a permanent notification prompting me to uninstall that "dangerous" app because it could "damage" my device. It's impossible to disable this notification. This app hasn't been updated in years. It has no ads. The only network request it makes…
Settings>security and privacy>app security>play protect security