Todoist App for Thunderbird won't work
I'm using Thunderbird 24.0 on Windows 7. I downloaded and installed todoist_for_thunderbird-4.1-tb.xpi. It shows as enabled on my list of extensions in Thunderbird. But I don't see any sign of Todoist. I tried to customize the toolbar but could not find a Todoist icon.
What can I do to make this app work?