To redeem your voucher, simply add it to your profile. The voucher credits will be balanced against your public charging costs. Go to Settings > Northe Credits and add your voucher.
Please note that you're also required to add a payment card to your account to be able to use the voucher credit. The payment will first be deducted from the voucher credit and then from the payment card when the voucher credit is empty.
Before initiating each session, you'll have access to your Northe credit balance. It's important to bear in mind that vouchers must be utilized before the expiry date specified on them.