My node is up and running with 90 peer connections.  From the Ardor GUI, select Settings -> Peers -> Add Peer.  Enter aws.scripterron.org and let it connect.  If the connection fails, post the last 100 lines of nxt.log so we can see what is happening on your node.

Note that aws.scripterron.org is already in the list of default nodes, so you would eventually try to connect to it anyways.  Going the Add Peer route just speeds up the connection attempt.