Manually Add Network in MetaMask
Sometimes the MetaMask won't let you change the network settings like the Ethereum Mainnet. In this case you can add a new Ethereum Mainnet.
MetaMask will open a new webpage for users to input information about the new chain.
Input network name, RPC URL, Chain ID and Currency Symbol and click 'Save'. It is ready to go.
Metamask will automatically switch to this network afterward.
BlockPI Ethereum Mainnet will be on the network list. When you switch to this network you are using the BlockPI RPC service.