Hello Aspirant,

See it depends for what purpose do you need it or if it is still valid then you can still use it but for some applications the candidate should have EWS certificate issued on or after some specific date like for JEE-Main it should have been issued on or after January 1st, 2022 and for JEE-Advance it should be of on or after April 1st, 2022, so it depends upon the application where you have to use it and get advantage of EWS reservation.

I hope you got my point.

Good Luck!!