I left my computer, via remote connection, in the hands of an employee of a company I'll leave unnamed to tune-up and cleanup my computer. There had been no mention of any problem with Firefox. He: 1) Reset my home page to SnapDo. Easy enough to fix, but I don't understand why. 2) Wiped out my History. I save all my history. 3) Closed all my active tabs. 4) Worst of all, he wiped out all my Tab Groups which contained things I was working on and had taken several months to assemble. I'm still fuming, but the question at hand is: Is there some way to recovery my History and Tab Groups?