How to use Todoist Plugin

Operating system

Windows

Joplin version

3.6.13

Desktop version info

Joplin 3.6.13 (prod, win32)

Device: win32, Intel(R) Core(TM) i7-9700 CPU @ 3.00GHz
Client ID: a7271a7b5efd4f9e97bd4be582800445
Sync Version: 3
Profile Version: 49
Keychain Supported: Yes
Alternative instance ID: -
Sync target: Joplin Cloud
Editor: Rich Text

Revision: 7e21762

Backup: 1.5.1
Easy Backlinks: 1.3.1
Freehand Drawing: 4.3.0
Hotfolder: 1.2.3
Joplin to Todoist: 1.0.1

What issue do you have?

New Joplin user here.
Trying out the Todoist plugin. I have installed it, restarted Joplin and added my Todoist token to the plugin.
When I click on the "New Todoist Task" icon at the top right of the window it opens up the Todoist modal and I can input the "Task Title, "Task Due" and "Task Description" which I can fill in ok.
However when I click "OK" the modal disappears but no task is created.

Am I doing something wrong, have I missed a step or could this be a bug?
If it is a bug how do I report it?