Then I received again a call from the same number and Callerx didn't block it. I have checked the blacklist file and the number was there, no dashes, no symbols, it's a known number, nothing special. I have checked that the service is running with ps -fea |grep callerx, and then add a testing number to the file. The testing phone wasn't blocked as well. Restarted service and manually loaded the blacklist, now it seems to work fine. Is it possible that the autostart script is not loading the blacklist correctly? or file changes are not noticed?