Tickets for Formula 1 USGP won't have the barcode available in the COTA app until 48 hours before the event. You'll still have the option to add them to your mobile wallet for easier access during the weekend. Barcodes are only viewable through the app and won't be visible on a mobile browser.
If you're still having issues accessing your tickets as we get closer to race weekend, stop by the box office - we're happy to help!