Thanks for letting me know about the soft lock when surrendering / erasing data.
In regards to the lewds.
Make sure to place the NSFW_Anims.MData inside the folder
MythGotchi\Mods\
Its important that Mods is with a capital M. as its case sensitive.
When launching the game, it might take a few seconds depending on HDD speed for the game to load the mod. While its loading, the lewds settings will not be visible.