Congratulations for finding our Body Check. If credit card is the only payment method that is offered to you at check out, it means that you decided to buy a subscription.
After the BodyCheck you have the option to either pick a subscription for 3 or 12 months.
If you would rather not have a subscription go a step back. After the Body Check you also have the opportunity to pick a single order. For the single order you have several payment option.