Server loader

I want to host a server myself because I can't afford to pay per month for a host, and I can't find anyone who's willing. But when I try, I set EULA to true and I start it. It pops up but nothing shows up like it is meant to, it just stays blank in all 3 boxes. I can't access the different things either, such as the op and the whitelist stuff. Please help ;-;