Well guess that’s the point of buying a pre-built unit!
You use MultiFunPlayer or XTPlayer to play script. Fleshlight casing should be directly compatible with the twist receiver - if it doesn’t, you can use the fleshlight case they’ve prepared for you.
Probably read this topic too:
https://discuss.eroscripts.com/t/guide-what-is-the-osr2-sr6-ssr1-and-how-do-i-get-one/158805