Raiden on mainnet

So, I’m having an issue connecting the Raiden package to mainnet.
I’m using geth.
Raiden says “Could not contact the Ethereum node through JSON-RPC.
Please make sure that the Ethereum node is running and JSON-RPC is enabled.”
But json-rpc is enabled - I’m using geth, and have --rpcapi eth,net,web3,txpool set as ext options.