H1B - DS-160 expired


I scheduled my Dropbox appointment on 25th Jan. Now I realized that I created the DS -160 on 3rd Dec but signed and submitted on 5th Jan, it means more than 30 days.

I heard that DS-160 is valid only 30 days from created date, so I think my DS -160 was expired by 5th Jan and submitted the expired form, Could you please advise will be any issue for stamping.