Hey. So, unlike some other dudes, I checked your website once I had my first problem (my fourth video or so in a row). I noticed you guys were on maintenance or something and probably the reason why it wasn't working then.
Now, if I may leave a suggestion:
The add-on works perfectly but has poor interface. Please consider making a button - although I will prefer the context menu shortcut, I know most users won't. If there is some kind of issue going on in your site, I don't see a reason not to simply:
alert("Hey! Our servers are currently under maintenance. Please try again within a few minutes.")
That aside, wonderful addon. Also blazing fast conversion. Thank you for your great work.