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 and its features.
Hit on "Change Subscription" button
Select the plan that suits you by hitting "Get Started" button
Choose your billing cycle: per month or per year
Enter the credit card details (if it is a paid subscription)
Apply discount if any
Hit "Yes" button to finish