Cloud auto-sync doesn't happen even though it's checked on

Before two days ago this extension was working fine. But yesterday all my sessions dissapeared. I tried saving a new session today, and it was gone after a restarting my PC. Am removing this extension now, don't wanna use this anymore.

Espectacular!!!
Simple, comoda, facil de usar, interfaz clara, me sirve un monton!!

Geniales Addon - einfach und funktional. TOP!

when signed out it wont work

https://addons.mozilla.org/ru/review_guide

This is a serious Single/Group Tab saver. Customizable, it's great!

Can't do without it now. Sure it can use improvements, but a really great start.

Laughably broken and unusable. The delete button for sessions deletes a random OTHER session. This app is fundamentally not usable due to this. Once you're down to the last random session the app decides to leave you with, you cannot delete this no matter what. So the session you want to keep will in all likelihood be deleted by pressing a delete button somewhere else in the app, but your random autosave from three hours ago is going to stay permanently. This is a joke. Uninstalled immediately.

great add on to save sessions please developer don't fuck up the add on is great as it is!

Would have to be the worst and slowest Session Manager anybody could ever waste their time using. Suppose I was spoiled with the original Session Manager, but this Tab Session Manager is woeful. It has to open each Tab when you want to view it, I have 117 open/avail at all times. It doesn't remember the history of the Tab just the page you were last on before closing down. And often opens the 6 windows that hold the 117 tabs, with just 1 tab in each. AND to make it worse, If you open a previously saved Tab Session Manager session, it opens them on top of everything else you have open, doesn't give you the option to open fresh. So then I have 12 windows open, 1/2 good , 1/2 bad. This app. wastes to much of my time I am now using Session Boss, it works like the old Session Manager.
I tried this app. several years ago and it was useless then - and it is still useless now.

Bloody brilliant stuff. Thank you :)