How do I choose a date like ship date or cancel date in Repzio? Why does the calendar not appear?

Due to recent change in iPad OS, picking a date has slightly changed

1. Tap the actual date to make the calendar appear. Not the space surrounding it. 

2. Tap your desired date from the calendar.

3. Tap outside of the calendar to confirm your selection. 

4. Then tab the "Select" button to finalize.