Due date for ecampaign response

Last date was 31.3.21
If you are liable to pay tax and not file return by the due date, you can’t file return thereafter and proceedings under the Income Tax Act, 1961, may be initiated to determine your income and tax liability. If you get assessment notice, you will end up paying interest and penalty in addition to tax liability.

Revised return filed before 31.3.2021.. is still response reqd tobe given? if so what is the due date?

If revised return is given then if response is required under e campaign then file it asap