Yeah, USCIS will not recognize such marriage and your immigration problem will start right there.
That's why many people travel from far distance and spend a lot of money on flight ticket only to get married.
That what I was thinking.
If you want to go through the immigration process, kindly go through an in person marriage.
If not, USCIS will not take it seriously and start doubting.
Did you receive any notifications after the online filing?
Because it's always advisable to file at least 2 or 3 days after your due date ( not the same you clocked the 90 days early filing) before sending your application.
Time Zone in different states may cause some files to be rejected because it was filed too early.