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Download the appBecause this app is installed from our own site rather than the Play Store, Android shows “App blocked” or “Unsafe app blocked”. Tap More details, then Install anyway.
Android says this about every app it has not seen on the Play Store before. It is not telling you the file is broken or infected.
Already have an older Betsa app? Uninstall it first. This version is signed with a new key, and Android will not install it over the old one — you would see “App not installed”. Your account is not affected; sign in again after installing.