Troubleshoot MetaMask

• MetaMask unavailable: install or enable the browser wallet, unlock it, and reload.
• Request already pending: complete or reject the open request in MetaMask before trying again.
• Wrong network: switch through the reviewed network control and confirm the CAIP-2 chain.
• Login says unlinked: sign in with the existing account and link that exact wallet first.
• Link action is absent: confirm signed-in, connected, unlinked state and MetaMask Pro.
• Contract-wallet login fails: verify the declared chain has a trusted server RPC target for ERC-1271.
• Old wallet still logs in: confirm replacement or unlink completed, sign out fully, and retry with a fresh challenge.

WalletConnect is not bundled; it belongs in a separate provider plugin.