Yes, you can apply for the EWS certificate during the UPSEE (AKTU) counselling even if you didn’t select it in your JEE Mains application. If you have an EWS certificate issued by the competent authority, you can use it for reservation during UPSEE counselling. However, you won’t be able to change your category from General to General EWS for JEE Mains, as the correction window for category change has passed. But for UPSEE, make sure to provide the EWS certificate during the counselling process to avail the benefits.