With the included Funscript Player (v1.3.1), it would not connect to my Handy.
I got it working by using this (Funscript Player 1.4.1):
https://mega.nz/file/euZxyIiA#lKB-UwptSFZ80Ujge29RD8RVbVIJkFRpcdkLzApmJ_0
Funscript Player update sourced from:
https://discuss.eroscripts.com/t/to4st-game-integration-mods/99000
Note, Funscript Player 1.4.1 uses .Net 7, which is a different .Net than Funscript Player 1.3.1:
https://dotnet.microsoft.com/en-us/download/dotnet/7.0