I really love using GoodTask widgets on my iPhone home screen. However, when I check off a task or make changes on my Mac laptop, the widgets on my phone don't update until I open the GoodTask app on my phone. I know that Apple limits how often a widget can reload, but my widgets seem to never refresh on their own. It seems like the whole GoodTask app never refreshes in the background either. The Apple Reminders app does refresh in the background frequently. Other app widgets refresh throughout the day as well, even if I never open the actual app (for example, Hello Weather).
I have checked background app sync settings, logged out and back into iCloud on both devices, checked iCloud storage space, deleted cache files, deleted hundreds of completed Reminders, restarted both devices many times, everything I can think of to force background refresh to start up again. But maybe it's just not supposed to work that way?