This game does not allow you to slough off your cards. These messages keep popping up that you can only lay off 1 card. It does not play well. It controls the cards so that you. Annoyingly u cannot make your own choices on lay off and discarding. It is not clear in its instruction. In fact, there is no instruction, except to tell u you can’t do anything you want to do. I have been playing REAL GIN. For over 20 years and this is a terrible set up. Very cheap. I want my 99 cents back. CHEATERS
Developer replied on Oct 31, 2018
You can always make your own choices on discarding and laying off.
To discard a card, drag the card that you want to discard onto the discard box in the center of the screen and let go.
You can layoff cards after you knock or gin or after your opponent has finished melding. To meld or layoff cards, highlight the cards that you want to meld by tapping on them. Then, drag them to the left side onto the melding box and release them. Only if the meld is not allowed will the computer return the meld back to the hand.
You can get instructions by tapping the "Help" button on the initial menu screen. If you are on the game screen, you can go the menu screen by scrolling to the right in the top area of the game screen (if you scroll to the left you will go the preferences screen).
I think you can ask Apple for your 99 cents back, but I hope you will try the above suggestions. I think that you will enjoy the game.
If you have any other comments, let me know.