Dear applicant, in most of the cases it is instructed that while filling the application form, you need to provide accurate information or else your informations will not match according to your provided documents. But since you entered wrong DOB, you can send a mail to their enquiry mail id and they will let you know about the process. Other than that you can edit your inputs when the portal will grant your access. But it's better if you send the mail sharing your issue.

Good luck!!