Doesnt update days until you open the app

I love this app and have used it for all my recent Disney trips but lately it has stopped updating how many days left (in the notification part outside of the app) unless I actually open it. Before, every time I looked at it outside of the app it would have the right amount of days. For example : it was stuck on 177 days for 4 days until I opened it.

Kelslalibe about Disney World Countdown, v1.2.4