A very insecure add-on, it has made disappear the tabs of the last four months, like that! After a normal update of the operating system. Lots of time wasted. This add-on should have something for backing up the tabs. I mean a button, not a f*** ordeal.
And the OneTab support team doesn't even show signs of life. Although why should they? After taking advantage of this rubbish they'll be on to another one by now. Another recommended!! Congratulations Firefox! Farewell Firefox! Wooow!!!