Try this in your things file and do not add anything extra until you have a camera coming online, most of the options have defaults that work hence why the ports are not in this file as they are the standard ports for Foscam. In future please use code fences.
Thing ipcamera:FOSCAM:Evi [IPADDRESS="192.168.xxx.xxx", PASSWORD="password", USERNAME="admin", POLL_CAMERA_MS=2000]
If this does not work, then you need to post some of the log output when you turn on TRACE output, this is covered in the readme file how to do this.