Pretty much title.
Offline Cloud gives this when trying to enable Offline support. It does however when switching Useragent to Chrome or Firefox. I suppose it is because currently Edge(ium) uses Edg instead of Edge?
I have the same problem. The error message I get is:
Unable to Enable Offline Support
This version of Google Chrome does not support the current Chrome Extension format. Update Google Chrome to enable offline support.
Thank you for alerting us to this issue, @Deleted. I have opened a bug to track this with the team that owns outreach.