There is currently no way to exchange one subscription package for another. If you wish to change/upgrade your subscription, you must cancel your current subscription package and subscribe to the new one instead. You can find more information about how to cancel your subscription here.
How do I subscribe to PREMIUM or PREMIUM Plus?
You can find the instructions on how to subscribe to both Premium and Premium Plus here.
You can find the instructions on how to subscribe to both Premium and Premium Plus here.
Important
1) If you cancel your current subscription, we cannot refund you for the remaining days, or convert them to another package. However, you will keep on receiving the perks from the package you cancelled until the last day you've paid for it.