The Free Version of the Call Filter is set to block All Spam. Calls are identified as Potential Spam but they do not go to Voicemail which the App says will happen. They continue to ring. These are not calls that are already blocked by specific number in the App or directly in the iPhone Phone App--but they are identified at least as poitential spam. What am I missing? Is Potential Spam just identified but not blocked? If so, this filter is relatively useless given the number of phone numbers that spammers can fake. All software on the phone (which is actually an iPhone 6S) is up to date and I am running the latest version of the Call Filter.