1. Open Browser and input 's1 midi trigger' on search box.

2. Open S1 MIDI Homepage.

3. Click S1 MIDI Server link.

4. Download S1 MIDI Wifi Server

5. Run S1 MIDI Wifi Server

6. Click 'Open'

7. Confirm the application running.

If you setup the firewall, please add following settings.
8. Open Security menu on System Preference

9. Click Advanced...

10. Click '+' button

11. Choose S1 MIDI Wifi Server

12. Check S1 MIDI Wifi Server was added.

13. Run S1 MIDI Trigger and check connection indicator is 'Connected'
(This icon indicate 'Not connected')

(This icon indicate 'Connected')

14. Check indicator blinked on S1 MIDI Wifi Server

14. Tap some control on S1 MIDI Trigger then the MIDI Received indicator is blinked

If these indicator nothing to blink maybe you should setup wifi router NAT setting.
Please see manual of router and open TCP port 9000 to 9029.
That's all!