RCJ

I have a ISY994 firmware 5.3.4 that works with UD Mobile in the house on wifi, but will not work outside on external network. I have setup the remote URL, port, username and password on the app. I have also setup port forwarding in my router. when I hit Test Remote Connection with wifi off i keep getting this message "Error (IOException) javax.net.ssl.SSLHandshakeException:connection closed" Can some one please help me out with this Thank you