You can do that. For instance, you upgraded to LEVEL 1. After 6 months, you needed LEVEL 2. Here's what needs to be done.

You need to pay for LEVEL 2 first. Contact us for the payment link.
We will refund half the payment you made for LEVEL 1.
Your account will be upgraded to LEVEL 2 plan.

Published on: 07 / 03 / 2019