I have had to completely reset my PC - reformat hard drive, reload Windows 10 and all apps. Everything has been restored save for my Firefox tabs. When I select Menu and the right arrow by my account name, the tabs on both my Android phone and my PC are listed. The tabls listed for the PC are those prior to the reset. How do restore these tabs to my PC? I have no Windows.old directory and cannot find a sessionstore json in Local, Local Low, or Roaming.