The view only wallet has been created with the same password as the current wallet. You can open it by closing this current wallet, clicking the "Open wallet from file" option, and selecting the view wallet in: %1 You can change the password in the wallet settings.
Rescan spent can only be used with a trusted remote node. If you trust the current node you are connected to (%1), you can mark it as trusted in Settings > Node page.
Use this feature if a transaction is missing in your wallet history. This will expose the transaction ID to the remote node, which can harm your privacy.