A wallet is just an app (like MetaMask) that holds your money and lets you approve transactions. Nobody, including ORYN, can move funds from it without you personally approving each action.
cUSD is a digital dollar (1 cUSD ≈ $1) that runs on Celo, a fast, low-cost payment network. It's the currency ORYN actually moves.
Non-custodial means ORYN never holds or controls your money. It only has permission to execute a split you already approved, and that permission can never be used to send funds anywhere you didn't authorize.