@Kmcm Awesome job with that testing! It seems like Alexa just simply does not understand or know this command to take it to the right route. I reached out to a colleague that also has an Alexa device, and they were able to pull up their recent event with that command, so it may be something specifically with your device not taking the right path with that command.
Have you tried rebooting your Alexa device or reaching out to their support team? I would say, before reaching out to their support team, try disabling the Ring skill and then re-enabling it to see if this helps. Although, if it’s to no avail, let me know what their support says! 