You can find your purchased vouchers in Menu → Vouchers.

After payment is confirmed, you'll receive a voucher code:

You can generate a printable version of your voucher. Click on 'Download,' then click on the print icon to print it directly or save it as a PDF.

Redeem your code on the Gift vouchers tab:

The redeemed voucher will appear in your voucher menu.

In the booking form, click on your voucher to apply the balance. You can check the remaining amount in the voucher details.