Port 2202 is open ?

Do you use your mobile devices inside your home network or via internet(mobile provider) ? If you use it inside your home network, only the server needs an open port on 2202. If you use it via internet too, you have to configure your router too and open port 2202, or whatever port you use.

I would by a cheap Access Point and connect it via cable to your machine, then you can log in into the WiFi ob the AP and all is fine.

The last time ive tried wifi direct it sucks. And if you use an extra AP, for example D-Link Dir 505, more than one device can connect und use your server.

Try

BeCyPDFMetaEdit

I cant change them too with windows properties.