Shortcuts don't work in IE9
I can get them to work by enabling compatibility mode, but I would prefer not to have to do that.
you can go to Tools -> Compatibility View Settings and add todoist.com on the list so you won't have to toggle between views each time you visit Todoist and don't use this mode for any other site.
this should be fixed now, you should be able to use keyboard shortcuts without enabling compatibility mode.
Please let me know if you still experience this issue.