Build me a Website (Full Fledged)

We want a Fully functional website!
We have a business of gift card exchange service so we want a website where -

1) User can enter their card details and can sell his/her card to us for cash!
2) User is able to exchange the card in return of other card!
3) Store Details of his/her Card Digitally with regular reminders!

HERE IS A NON WORKING PROTOTYPE
https://1gift.dorik.io/ ?

NEED MORE DETAILS
Contact on +91 9413941555 (Only Whatsapp)