Skype for business(O365) web chat

I have created an app that connects to O365 server, the purpose is to create anonymous chat application for Skype for Business. Everything works and everything auths, however i'm struggling to invite licenced Skype for business user or start conferencing. The response i'm getting back is: reason: { code: "Timeout", message: "The operation was timed out." }, I would like somebody to finish this project off for me. Thanks, B