Waardering 4 van 5 sterren

I love this addon, after updating I noticed some problems, and I found that when I use english version of firefox it works perfectly, but when I use the spanish one, that I want, the sync tab among other things don´t work or are missing.
any way to fix this ?

Deze beoordeling betreft een eerdere versie van de add-on (2.1.1-signed).