October 27, 2020
Yes, ezNotifications stopped working. I sent the following feedback to the developer (via Add-ons > ezNotifications > Help > Report an Issue). I've no idea how long until they receive it or if they care to put in the time to fix this freebie.
"I'm sure that I've used ezNotifications recently, but today (Oct. 26, 2020), when I try to set up a notification, a popup appears that says, "Updated add-on. A script is attached to this document needs your permission to run." When I click Continue, the "Sign in with Google" popup appears. But when I click my google account to sign in, a popup appears saying, "Sign in with Google temporarily disabled for this app. This app has not been verified yet by Google in order to use Google Sign In.""