I have posted a tutorial from Official Mongodb Docs in my previous reply, you can try following those 9 steps (if you are not bound by live server) - recreating your keyfile and then starting mongod manually using your config file and your keyFile:
mongod --keyFile <path-to-keyfile> --replSet <replicaSetName> --bind_ip localhost,<hostname(s)|ip address(es)>
Include additional options as required for your configuration. For instance, if you wish remote clients to connect to your deployment or your deployment members are run on different hosts, specify the
--bind_ip
Follow the steps 1. - 7.