Hi Alison
Very sorry about the issue with access to your tours.
We have received a report via Esri Tech Support that Story Map Tours fail to load on iOS and MacOS devices as a result of the update we made to the app in the ArcGIS Online release on Wednesday. We will be updating ArcGIS Online tonight with a fix for this issue. The same fix also handles the same issue we have observed in Story Map Swipe and Spyglass apps on the same devices.
Can you confirm which browser and OS you are using when your Map Tours don't load? If you are using iOS or MacOS then it is the same issue above that will be fixed tonight.
Your City of Windsor Sculptures map tour that you posted above works fine for me on Windows (very nice work by the way).
PS. Your City of Windsor Construction Detours map tour (which is in the Story Maps Gallery because it is a very cool looking customization of the Story Map Tour) is unaffected by the issue above because it you are self-hosting it (in order to customize the source code) with a previous version of the app, and not the latest version with the issue.
Rupert
