Auto-Update won't work in TB Rated 4 out of 5 stars

The addon works well.

But it's the only addon the auto-update never works.
I always have to go to this site and drag&drop the "green button" to the TB addon tab.

This review is for a previous version of the add-on (1.20.1). 

Would you believe me if I tell you it has nothing to do with the addon itself? ;)

https://forums.mozilla.org/addons/viewtopic.php?f=20&t=11017