Based on your configuration you have the ICM IP/port set to listen but you have not defined the PI system for the webdispatcher to send traffic to for the orders.
I also suggest you change the dispatcher to do HTTPS and not send your customer's order information in plain text.
Basically to get the mapping to the PI system you want to use the following example:
wdisp/system_## = SID=SID, MSHOST=Virtualname,MSPORT=81nn,SRCSRV=*:8005
The ## in your case would start with 0 (zero), the mshost value should be the same name the customer uses in SAPGUI.
Once that information is in the inst profile, restart the dispatcher and when you log back in you will see the PI system on the left hand side.