Today I got a message from apple when opening Grub Guardian it is as follows "Grub Guardian Needs to Be Updated This app will not work with future versions of iOS. The developer of this app needs to update it to improve compatibility" Clicking learn more brings up this "This app may slow down your iPhone and will not work with future versions of iOS if they are not updated. If no update is available, contact the app developer for more information.
This comes after I just spent crowns to unlock all towers and maps. Please update it so I can continue to enjoy playing this fun game. Thank you.
Here are the pictures of the messages:
(I had to edit out your pictures per the rules, but I do have them saved. Thanks! ~Dworgyn)
Thank you so much for your time and work on this great game!
This sounds like an issue for the app developer themselves. I would try to email Kingsisle support about this issue, and see where they redirect you to. I play on Android mainly, but I do have an iPad that I occasionally use for it as well. As far as I know my app is automatically updated. Try uninstalling and reinstalling the app if you still have this problem!
We'd like to update this app, but have no current time frame for when that will be done. In the meantime, you can still play Grub Guardian on freekigames.com: