hi,

if you have got your admit card and successfully download it, then there would be no issue. just prepare for the upcoming exam. jee main would conduct for 4 sessions  so if there is any problem or correction need you may correct in next correction session. Last date to make changes in the uploaded photograph, January 30, 2021 for january session exam. since correction date has passed you can not change now for the first session jee main exam.