We want the upgrade but get only the possibility to pay with PayPal.
Is there no other possibility?
If you want to upgrade through the web-app, you can use your credit card by using PayPal's guest checkout (choose "I don't have a PayPal account").
If you have an Android phone, you can download our Android app: http://todoist.com/android and pay through Google's PlayStore.
If you have an iOS device, you can pay through the Apple Store using our iOS app: http://todoist.com/iphone