Think it best you post your online 90 day as soon as you get the email reminder, gives you plenty of time to try and sort a problem. Not sure, but, if you did a 90 day in person before, you don't get the reminder, only a reminder for the previous online application. ..🤗
If you do it on the day it is due, and the office has not got to you in time, it maybe rejected as late, perhaps something else to clarify by a member...🤗