If you paid with a credit card...
After logging into your subscription account, click on the profile icon at the top right corner of the website, go to Member Profile, and click Upgrade Options to proceed.
Once the upgrade is set, the remaining subscription period will first be adjusted based on the price difference between the plans. The upgraded plan will then take effect at your next renewal and be charged accordingly.
If you used a payment method other than credit card..
Kindly contact our support team by submitting the form.