Used to love it- now really frustrated

I used to LOVE this app, but its stopped working! When I click on the icon to the far right, I used to be able to select a coloured flag, but nothing happens at all when I click that button now. Similarly, the calendar button and the alarm button dont do anything either. They turn green when I click them, but no calendar opens, and no time option open anymore. I think this all changed when I updated to iOS 8. I have uninstalled and reinstalled the app, and it did not help. Really frustrating when I paid to unlock the app. I also cant see a way to contact the developer. Hope a bug fix is on its way soon.

GlobAbob about Do! - Simple To Do List, v5.3.5