Both those resources seem not accessible. Says "resource expired" potentially the signed URL/Cookies have expired.
Seems your session timed out. Just refresh the page and should work fine.
Hey Ryan and Folks!
I was able to get this working for me and received notification 🙂 One thing that I did differently was that I set up the threshold for the alarm to be greater than or equal to 1, and you had it set to 0 – may be that was the reason?
Hope this helps!
There is also a modern way of doing this – https://aws.amazon.com/blogs/mt/monitor-and-notify-on-aws-account-root-user-activity/