Hey, I forgot to apply the seal of my institute on my gate eligibilty certificate when and how can I re-upload my certificate because there is no option currently in the correction window for re-uploading certificate...plzz help...

Hello student as per source student can correct their information through gate correction window tilll 1st week of November. I'm providing you a direct link below plz tap on it it'll redirect you to the official website you can log in to your application and change your incorrect information.
http://appsgate.iitd.ac.in/

Feel free to comment if you have any doubt
Good luck