Dear Shreya,

As you have mentioned that your EWS certificate was issued on 16/04/2021 and the validity of EWS certificate is one financial year so you do not need to worry about it and the certificate you have currently will be applicable for all the process of this JEE Main 2021.

As you asked that whether you can apply it in JEE Main or not, so ye you can easily apply it in your JEE Main form.

To check the format of the EWS certificate, you can go through the link below.

https://josaa.nic.in/webinfocms/Handler/FileHandler.ashx?i=File&ii=145&iii=Y

To check how to apply for JEE Main phase 3, you can visit our site for it.

https://engineering.careers360.com/articles/jee-main-application-form

I hope this information helps you.

All the very best!!