Unfortunately, Hardware Wallets are not currently compatible with ZED RUN. This includes storing your racehorses and purchasing racehorses off of our Marketplace. 

Please do not transfer your ZED RUN racehorses to a Hardware Wallet or purchase using a Hardware Wallet.

This includes using a Hardware Wallet like Trezor or Ledger via MetaMask Hardware Wallet Support.

We will notify users at a future date when Hardware Wallets become available.

https://github.com/MetaMask/metamask-extension/issues/10240