I used to have a side bar/ side window pane on my Firefox browser in which I could see my Todosist all the time. It is no longer there. How do I bring it back?
please go to Tools -> Add-ons -> Extensions and let me know if you see the Todoist plugin listed there and if it's enabled or disabled (in which case please try to enable it).
If it's enabled and you can't open it with the "T" icon, please remove it completely, go to http://todoist.com/firefox , re-download and reinstall it.
I disabled it, removed it and then re-installed it because the 'T' icon wasn't present. But now it is after re-installed it!