New version 1.51 ~ submitted to the Play Store, should appear soon
Sorry for the frequent updates, I promise I stop now. This is an urgent update, because the premium upgrade mechanism fails for some of my users.
So a new upgrade alternative had to be added (the in-app-purchase stays to be the primary and preferred method) but if that is not available, you can now purchase a separate “Premium License Key” App which will unlock the same features as the IAP.
►IMPORTANT: do NOT buy the License Key app, if you already upgraded using IAP!!!
I made a little chart for those not fluent in English 😉
Advantages of IAP:
►No need for a second app to keep installed on your device
►valid on any number of devices assigned to your Google Account