No snapshots and missing detection

Hi,I have the Home Standard Plan.I've searched online, including a similar question (https://community.ring.com/conversations/general-topics/i-cant-find-ring-camera-snapshots/658041f251f6e6fe78600fc0) but can't find an answer to my question of where to find snapshots from my Stick-Up Stick Up Cam Pro or Stick Up Cam (3rd Gen) cameras. I've set everything up, as per all the instructions and videos online, but under Event History all I can see is thumbnails of recent Live Views and Person Detected videos, no snapshots. I've had the cameras for 6 months and I only noticed this because I had two 'person detections' last week which are suspicious and I want to know what happened immediately after the short motion detection video ended. Why can't I see any snapshots anywhere, even those these are all set up to activate (every 3 minutes on the pro camera and every 14 minutes on the 3rd Gen camera)? On another point, for both separate'person detections' it's very disappointing that the Cam Pro detected people walking up a path before going to an area not covered by the camera, but didn't detect them returning, even though they must have come back the same way (as there's no other way out). This happened twice in 2 days! How can that happen? Tks in advance for any help, as both issues are very frustrating.