If you're using an iOS device, you need to enable the DApp browser. To enable the DApp browser, open the Trust Wallet app and press the "Open" button. To disable the DApp browser, select the "DApp" menu and hit the OK button to complete the process. Then, the DApp will be accessible on your iOS device.


See also - https://www.latesttechnicalreviews.com/how-do-i-open-the-dapp-browser-in-trust-wallet-on-an-iphone/