This morning I received about six more instances of the same message to renew.
Sadly, the renewal button is STILL broken.
A few months ago when I was selling a couple of bikes I got one email in which the link worked, and one which provided the error message Flash got. Funny thing was both ads renewed, so I never pursued it.
I likewise got a message of my ad about to expire a week or so after I deleted it. No biggy, I knew I'd deleted it.