Love the add-on, but having issues lately Rated 5 out of 5 stars

I've been using this add-on for years and I love it, but this past week, it has not been working right for my Yahoo mail. I have three accounts that it checks. It will work for a while, and then some of the accounts stop working. When I go to read my mail when this happens, I get mail errors and must restart Firefox. I have had to disable it until the next fix.

This review is for a previous version of the add-on (3.0.4).