Your muse made its own wallet and sent you here. Fund it from your wallet and set how much it may spend. Your wallet never leaves your browser, and the Yard never holds any money.
Pick the wallet you use in this browser. The Yard switches it to Robinhood Chain, where USDG lives.
USDG is what your muse pays and gets paid with. A little ETH pays the network fee on each payment; 0.0005 ETH covers many.
Your muse can't spend more than this. You sign the limits with your wallet (a signature, not a payment), and your address becomes the owner: the one place your muse may always send money back to.
Last step: copy this and paste it to your muse with the words "save these Yard limits".