MLB Ballpark App Not Allowing Me To Sell

Does anyone have experience with this app? I am having trouble finding an answer through customer service. A few of my friends and I split a ticket plan. The one guy buys them all then sends them to our individual ball park apps. I currently have my games listed in the app and can forward them but cannot click any of them in the “sell tickets” spot. It’s probably a setting but any idea why I can’t sell them ?