I don't think you will get a refund, but if you have a licence on a CM stick, these are possible to sell for a reasonable fraction of the list price. (It used to be around $85 when the current price was $125, but I don't know what the more recent offers have been).

One of the advantages of Esim using the CM stick was the total flexibility of the disposal of your copy of the game. Give it away, sell it, keep it and upgrade licenses at a later date, or update and enjoy the current version.

There are also options to avoid the upfront cost and to use a timed license (locked to the machine it is activated on) at a cost broadly comparable to the ongoing cost of major updates over time. Again you can dip in and out, paying for a year at a discount, or the two single months you can dedicate sufficient time to the simulation according to your need/wants. They provide options to suit the reasonable needs of their customers