I installed GoodTask on my Mac, iPhone and iPad and cannot get my lists to synced in the proper order on iOS. I've deleted and reinstalled all the apps, no help. I also tried the iCloud preference syncing recommendation that was mentioned elsewhere in the forums.
GoodTask on my Mac has all the lists and they are all in the proper groups and in order. Reminders in iCloud, on my Mac and on both iOS devices matches GoodTask on my Mac. However, GoodTask on iPhone and iOS do not. The tasks and lists are all there, but the lists are largely not in groups at all.
ETA: I just deleted GoodTask on my iPhone, then turned off Reminders syncing on my phone, then turned it back on, verified everything synced correctly to Reminders.app, and THEN reinstalled GoodTask. The lists are still a mess