SHOW DUE DATE IN REMINDER - and bug

I have 1 reminder that shows "due" under "At a Location

I don't show a due: in any other of my reminders, and can't seem to find how to create it - and doesn't come up in a help search.

this is what my other reminders look like:

Also when I start a new reminder and open the "i" to add dates, etc; it freezes and I have to close reminders and reopen - the new reminder is there w/ correct info.

Would appreciate any input - thank you