Where is the secret shop on Mario and Sonic at the Olympic Winter Games

first you must beat the game either on single or team mode. Then you check your mail often and it says theres a secret shop. Go to the shopping icon. There are two long passageways, one of them is where characters walk in and out of. The second one leads to a building, with a triangle point on the top. click on the biulding. You can buy cards to get exclusive items and decorations to hang around the town. Good luck!