This looks like an editor preview. Wallet popups often do not appear inside the GemPages preview iframe. Publish the page, or open the live store URL in its own tab, then mint there.

A security or extra wallet extension (such as AegisWeb3) is active and can intercept MetaMask. Pick MetaMask by name. If a mint hangs, disable AegisWeb3 for this site, or try an incognito window without that extension.

Reads use public RPCs. Minting sends a transaction from the wallet you pick, to that same wallet. Unaudited contracts — review the transaction in your wallet before you approve it. To add or edit a drop, change the COLLECTIONS array in this embed.