Log in to https://app.wipperoz.com/en
Go to "Account settings" using the menu in the upper right corner that shows your first and last name or your profile image if you are using the platform from a mobile device.
Go to the "Subscription" tab
On the left, you will see a box with the name of the plan you have subscribed, its status and features.
On the right, you will be able to check if you have a payment method entered and its details.
If you want to add or change your payment details, you may click on the pink and white Configuration symbol.
You will be automatically redirect to Stripe page where you will be able to add or change your payment method.
Back on the "Subscription" tab, you will be able to check your Billing information which will show you all invoices issued.
NOTE: If you want to change your subscription plan, yo can read this article from our Help Center.