I want to say a couple days. After that you pay a late fee. I was late once. I was out of town. Paid late fee after 5 days. The office staff are super understanding and great to deal with. I understand their policies so I paid the late fee no questions asked.
Not sure about it
They usually take the payment off your card. They give you 7 days after the due date before they lock your space with their own key.
Thanks! Your answer is awaiting moderation.