If you are looking to purchase merch, visit https://represent.com
Sidestep Merchant allows Artists and live entertainers to sell merchandise directly at their shows. When a fan purchases through the Represent site, the Sidestep Merchant app is used to scan their code and to pick up their order. It contains sales information, orders, inventory management, and the ability to charge at a show.
You will need a Sidestep Merchant account to use this app.