Firefox für Android-Hilfeforum

Up until the last few days I had bookmarks, shortcuts etc saved on my phone and Firefox browser. Today I went to click on a shortcut that I regularly use, only to find it had been completely deleted from my phone! How did Firefox get access to my phone to remove these and to completely clear my history, bookmarks, shortcuts etc??? I never gave permission to access or to delete anything from my phone or browser!

When I am finished with a tab and close it, and then close down Firefox app, when I click back into Firefox the tabs that I have closed are still there open. How can I stop this from happening without having to "quit" and clear cache etc all the time? Surely when you close a tab it should stay closed?