Hello! While I do have 97 tabs open in Firefox on my iPhone, NONE of them appear in my 'Synced Tabs' Sidebar in Firefox on my macbook pro. To allay the immediate and obvious questions: + Yes, I'm running the most up-to-date version of Firefox on my mac (76.0.1) and on my iPhone (version 25 with no additional update available on the App Store) + Yes, I am signed-in on both devices. + Yes, I am signed-in to the SAME account on both devices. + Most surprisingly: YES AND YES, I can SEND a specific TAB from the mac to the iPhone as well as SEND A--ie ONE at a time--TAB from the iPhone to the Mac. Whaaaaaat... why?? (a quick PS: the all-caps words are all-caps-ed for emphasis on how unbelievable this is--I'm far more surprised than I am angry; I have faith in the Firefox community being able to solve this) To reiterate, despite the situation described above, ZERO tabs appear in the list of Synced Tabs! There is a (fairly meta) screenshot attached below which shows the empty Synced Tabs Sidebar. THINGS I have ALREADY tried: 1) I have tried signing out and signing back in on the Mac. 2) I have tried pressing/running a 'sync' on both devices. 3) I have searched for archived help files and found one suggesting I look for a "userChrome.css" file in the profile folder buried in the hidden view of my ~/library--I did this and found no such file. 4) I tried signing out and clicking on the 'sign-in to sync tabs' button IN THE Synced Tabs Sidebar ITSELF; I was able to login but... no change. 5) I tried RENAMING BOTH devices. The renaming synced on both sides, but THE TABS ARE STILL MISSING. :/ I've run out of immediate ideas... I turn to you, here, for help. Please help. Cheers, MitzvahGuy