Also a non reg SP is only ever going to see anybody as reported which is hardly helpful.
any SP concerned about their safety should install and verify their identity.
logically the app should function as caller id screen. if your number has been reported and you contact a verified SP, the app intercepts and shows reports. SP will instantly know if your a time waster, abuser, rapist, thief, etc.
perhaps I'm wrong?
thinking aloud,,, for us punters that are unverified, I guess the app produces a unique-ID against our phone (IMEI or Mac ID). When our number is reported, our unique-ID gets pinned to our SIM number. When we switch Sims the app still has the unique-ID and can update their database with the new number.

*just uninstall and reinstall CE and the unique ID stays the same. I guess we're screwed once the ID is reported against our number and the only option is to uninstall the app and get a new SIM. thoughts?