Please tell me:
1) Version of your OS?
2) VNC server you are using, and its port?
3) Port setting in remot3.it (weavedinstaller)
4) VNC client you are using?
I've been using VNC quite a bit recently, with UltraVNC and tightvnc clients. I often use tightvncserver on the Pi, but since latest Jessie comes with RealVNC built in, I've also used that successfully.