If you want to switch from Animotica Light to Animotica Full Pro, you'll have to pay the Full Pro license's total price (simply click 'Buy' on the Full Pro option).
Please keep in mind that the money you paid for the Light plan will not be refunded.
If you purchased Animotica Light and want to switch to the Full Pro plan, you can request a refund for the Light Pro version. The Microsoft Store is responsible for the refund procedure. Please follow a link to an article on how to request a refund from Microsoft Store. You will find out if your product is eligible for a refund in your region. If you do not qualify for a refund, we cannot provide a discount since it is against our pricing policies.