Everytime i sell 1 card it dosen't sells it always say To Prevent Cheating,the public and private sales(excluding sales to kate) functions will be unlocked indefinitely after your first purchase of credits at the shop(more information can be found at game help section) it always happen i have so many cards and i only aim for la junta deck but since i cant buy more la junta i want to sell my cards but i cant sell it( please help me
I'm going to say the even more obvious. You spend a lot of time on this game, am i right? even a few hours? Then for god's sake, buy a few things. It's a whopping 3 dollars to buy 50 credits. I personally do it all the time just to keep my stars, and to show the developers that I appreciate their work. I don't particularly care about the 2 packs i buy with those 50 credits. The point is that I do it to show my appreciation for the game they made. Same as when you tip your waiter/waitress.
So just spend the three dollars.
As for you who can't buy credits, I feel your pain. Try changing your country of origin to "international" or whatever that generic one is. If not, I'm really quite sorry. I'd contact the staff, not post on the message board.