I had to restore my system due to problems with Windows 10. I just set up my new machine a few months ago and it was the first time I'd ever used Sync. I am unable to get it to work this time. I downloaded Firefox to my new machine and signed into Sync. I powered up my old computer and signed into sync. I'm not sure what step I'm missing but my bookmarks and such are not showing up in Firefox on my new machine this time.