Try uploading thumb imprint through edge browser. I have got reconfirmation mail that my application had been submitted

Hii Nimish!

In the case which you described in your question, you need to contact desk and ask them about the same. They may give you any suggestions or help you by rechecking you application form and making any corrections or specifying you what to do next. You will get the contact details of the helpdesk on the official website itself. Hope this helps.

Good luck!