Easy Call Report relies on the «PSTN & SMS usage» report and meeting details of individual calls to determine if a call to a call queue was answered or missed. In rare cases it’s possible that Microsoft publishes this data with a delay in your tenant. If that’s the case, you will automatically start receiving missed call notifications again, as soon as the date becomes available. This only applies to calls for which the data is available within 6 hours after the call was received. If it takes longer than 6 hours until the data is available, the call will be ignored, and you won’t get a missed call notification in this case.