If you have purchased the DigiCal+ upgrade via in app purchase in DigiCal, for example with a promotion, you do not need to install the DigiCal+ key separately from the Play Store.
All the DigiCal+ features should become available in DigiCal!
To check if you have purchased DigiCal+ through an in-app purchase:
1. Open de Navigation drawer (tap on the top left button)
2. Scroll down and tap on Preferences
3. Scroll down and tap on My Purchases
If the "My Purchases" screen in DigiCal shows your order, it has been activated correctly.
If you cannot find your purchase, try to install DigiCal again using the web version of Google Play.
- Start your internet browser (Google Chrome/Firefox/Internet Exploder) on your computer
- Go to https://play.google.com/store/apps/details?id=com.digibites.calendar&
- Log in with your Google Play account
- Install DigiCal
- The DigiCal+ in-app upgrade should now be activated