Fix CI3 Reminder Date Issue

I need an urgent fix for a Code Igniter 3 issue. The reminders date is not saving after recent updates or new features were added.

Requirements:
- Expertise in Code Igniter 3
- Experience with troubleshooting date-related issues
- Ability to quickly identify and resolve problems

Ideal Skills:
- Strong PHP knowledge
- Familiarity with database interactions in Code Igniter
- Problem-solving skills and attention to detail

Please provide a quick solution as this is critical for my application.