This is a strange error. I was mistaken when I said before that the settings weren't being saved, because in my testing over the last week they are. Can you please do the following...
Start Sex Sim
Choose Options
Change the settings
Click 'Done'
Click 'Go'
Use the sim, then exit
Start the sim again
Check your settings
Are they how they are supposed to be?
I realized that the settings don't actually SAVE themselves until you hit GO to go into the sim. If you just set them then quit out (without clicking GO) then they won't save.
Can you verify for me if following the steps above solve the issue for you?