Reminders not updating on my iPhone

iPhone 15, iOS 17.02

Reminders update not working. Reverts back and prompts to update again with loss of the new functionality for groceries. Lists go blank and reappear with old information prior to update.

I am signed into iCloud with reminders turned on.

I Restarted the iPhone, deleted all completed reminders, toggled reminders off and on in iCloud.

[Re-titled by Moderator]