To make a deposit open your profile and navigate to the "Deposit" section.
You will see all the methods available for you. Choose any method you wish, enter all the needed data, and confirm the transaction.

Make sure you have confirmed it on your side as well. It may be an email/SMS confirmation or the one via the bank's app.

As a rule, the procedure takes about 5-20 minutes but it can take up to 5 working days, according to the payment provider's terms.