However, google won't allow you to complete the in-app purchase process from that app, even if it's signed with my developer key, as it doesn't match the version they have on record. Therefore, once you have tested the version from sportablet.com, you have to:
- uninstall : (
- install from the google play store
- complete the steps above (get a locked activity etc) and buy the app from the store
- check that you do not have any padlock anymore, meaning activation succeeded
- DO NOT UNINSTALL NOW : )
- just get the newest version from the sportablet website and install over the old version
- that's it
sorry to put you through all this. I'll come up with a different model later on, but right now I cannot really spend much time on the apps. On the other hand, if you go ahead with this, you're fully aware that you're using a piece of software that is slowly going into oblivion : )