I have two computers that I use at different times and for different reasons. I want the open tabs on them to be the same. I am signed in on both computers but there is no syncing happening, even when I go into the menu under my account. It says it's syncing, but it's not. When I try to "Add another device" the option of adding another computer is not given. I do not want to use the profile backup because I want to MERGE the two sets of open tabs between the computers, not overwrite one.