In the iOS app, the Alarm device and events are not showing up in History. In contrast, they can be found in Devices/Alarm Base Station/Base Station/Event History but only cameras and camera events show up in the top-level History section.
Hi @user41805. When going to the main History page in the Ring app, you should see some filter options towards the top, with the first one being Cameras. If you tap it, you will get different options to pick from, and Alarm should be there. If you are not seeing Alarm as an option, verify that your Ring app is up-to-date. I hope this helps.