How to use a voucher
Do you have a voucher for Viaplay? Go to https://viaplay.com/account/redeem and enter your code and proceed to create an account. Note that you have to add a payment method even with a subscription started on a voucher. If you already have an account, just login and use the code. Not all codes are applicable for active customers, if you have issues activating the code, read more here.