To link the card, you need to pass verification on "Verification" page.
After verification is completed, click on Settings tab on Wallet page

In "Add card" section, fill out the form to link the bank card to your profile.

Country selection: Specify the country of recipient's bank from the list.
Card Number: Enter your bank card number.
Cardholder: Select cardholder from the list.
The list is generated automatically based on the data provided during account verification.
"For payments as self-employed" checkbox:
Select this option if the linked card will primarily be used for payments as self-employed.
After filling it out, click "Add" button.