hello aspirant,

I hope that you are doing absolutely great.

With reference to yoru above mentioned query, i would like to tell you that there will be no issue regarding this if you have uploaded your signature in blue pen. However, the NTA facility have strictly mentioned in the information brochure that there will be no correction this time. But don't worry, your application won't be withdrawn.

Further, since you are preparing to give your JEE mains 2022, this year. You can follow the below preparation tips and strategy to score more than 90 percentile in you JEE mains exam : https://engineering.careers360.com/articles/jee-main-preparation-tips

Further, to know more about JEE mains and other details, follow the below mentioned link :

https://engineering.careers360.com/articles/jee-main-2022

I hope that this will help.