Somehow I managed to release the free version of the app with a 3 day trial, not 14 days as advertised. How stupid am I!
Needless to say I have corrected the error, but if you happen to have got the incorrect version (pre v4.05) and would like to try it for the full 14 days just delete the version you’ve got and reinstall from the AppStore.
I can only apologise for this.