I  will suggest you should  contact an  agent for that , submit your requored documents there and they'll do all the further work for you. Wait for some days and you will get your ews certificate.

Please clarify what you want to ask about? You are telling that you have a verified EWS certificate and then you are asking how to get them, contradicting yourself. If you wish to store your certificates online, use Digilocker. It is a government initiative and those stored online are also valid.