Mass Edit of Clubs not working - license not valid.

I've bought a license. I've applied the license.

I launch the application, check the registration and it says registered.

I filter the clubs I want to edit, use the advanced editor to set transfer balance to 1, but when I press OK it says 'your license is not valid'.

Sure enough, when I check the registration, it now says unregistered.

Any clues?

Is the creator on holiday or what?