As of July 2020, iOS users do not have the ability to use the browser in Trust Wallet to verify for HODL Rewards as they took away their in-app browser feature.
You can still redeem your COIN to it, but it is unable to connect for HODL rewards.
You can sync up any wallet such as MetaMask on your desktop for HODL rewards, or any that have the in-app browser feature.
Why Can't I Connect My Trust Wallet to HODL Rewards on iOS?
