I've been playing the windows version with joiplay.
The reason for that is ren 'py and Android 11 don't play nice sometimes.
Edit: this is what they say to do to add the dlc for the other versions. Since you can't really put the dlc on the android version yet.
"If we are talking about BDSM DLC, then you just need to extract the zip archive into the game folder. It should look like this: Her New Memory/game/bdsmdlc.rpa"