This problem can occur if your browser cache data conflicts with our checkout page.
Usually, you can fix this by refreshing your browser cache, then going back to choose your plan on our product page and checkout.
Alternatively, choose another browser and/or use the incognito mode of your browser.
If clearing your cache and restarting your browser does not solve the issue, you might want to try it with another browser.
If this is still not working, please contact us, we’ll help you solve the problem.