How do I use K relay

How do I use it I open ROTMG and join and use the commands it dont work

First step is to ask in the k relay thread itself. Second make sure you run k relay and click dtart proxy and on rotmg select the proxy server as the server then go in game.

Well first of all, K Relay is an addon to the ORape client which you can also download here.
To open K-Relay, you open K-Relay, and you start proxy.
Then you go on Realm using the ORape client, open the servers, and there should be a Proxy Server.