I moved outdated content to a DLC to save installation space for new players as the game exceeded 1.5GB and analytics was showing that most of the stuff was actually not used that much.
Nothing is gone. If you still need old content, just get the free DLCs.
I've copied the instructions for Android from Discord over into a dev-log. https://wittyminxgames.itch.io/nsfw-solitaire/devlog/1450513/adding-dlc-card-set...