Hello,
How do I turn off these notifications? I have never received this notification due to a live failure; I only get these reports for Flows that fail while I'm building or modifying them. And that happens because I make mistakes, which I then fix.
These are coming from a do-not-reply email address, and there is no option to unsubscribe. Here's a screenshot.

There is no reason to send a notification about a failure that occurred before the last update of the Flow. Because, if the flow has been updated after the failure, the current iteration of the Flow has not failed.