In my mac the service name is “OmniFocus: Send to Inbox”, like if I still had Omnifocus 1, but I have 2.
In any case, the services do not seem to work at all, even when called from the services menu (without keyboard shortcut).
I have tried the test versions of the app, but no luck yet.
This needs to be fixed, in my opinion. I used to be an avid user of those services…