Installing Litchi from Amazon APP store? How?

I just purchased a DJI Smart Controller, have three DJI drones that it can control and it works with Litchi!
The Smart Controller uses Amazon Appstore to download Litchi and will not download it unless you buy it, I have paid for it on google for my Galaxy devices (phones/tablets) - How do I get the version of Litchi that works with the Mavic 2 Zoom and Mavic Mini 2?
I found the answer: In Help FAQ #10 Apple, Amazon, Goggle each require payment

That’s right…

Instructions for installing Litchi on DJI screens: