When you first sign up your campaign is in the free tier with only a limited amount of signups available.
If you want to upgrade to a full campaign, click the Buy button in the top right corner.
Now select a Prepay tier and click Order now.
The minimum purchase is 800 subscribers for 1.620 DKK. If you get more subscribers than you have paid for, we will invoice you the additions subscribers after the campaign has ended.