hi,

see if any of your documents or photo, signature jpg image has any discrepancy then you would get an email from gate 2021 conducting authority to change your uploaded documents. however there is less chances to cancel of application.  many of the applicants still not get any confirmation email and it showing that application is under scrutiny , so keep an eye on your email every day for latest emails or notifications. time to time also check your gate application status  on GOAPS Site.

hope it would help.