Not receiving back-to-back push notifications

For the past few months, my husband and I have both noticed that we do not receive back-to-back push notifications on our phones.  For example, someone comes up the driveway, and we get a motion alert from out driveway cam.  Then they get to the front door, and the doorbell sees them (the light goes on), but doesn't send another notification since the driveway motion alert just came through.  If I go into the app, it will show the motion detection in the Timeline so I know the system is picking things up correctly, it's just not sending all the push notifications like it should anymore.  Apps have been deleted and reinstalled on both our phones.  I really don't think it's us as we've had our system for over 2 years and have never had an issue before.  Anyone else have this issue?