Once you have set up the WIFI on the vx690 terminal you'll need to pair the terminal with the driver app.
To pair go into the ingogo Driver app menu and tap 'Eftpos Terminal', then select 'Setup'. Your terminal should automatically be listed, but confirm the IP address matches what is shown; if it does not match, simply delete and reenter the correct the IP address.
Tap 'Confirm', then 'Pair'.
Once you have seleted 'Pair' on your phone, then tap 'Pair with POS' on the terminal. It should only take around 10-20 seconds to connect.
Once connected a 'pairing code' will be displayed on both devices, make sure they are both the same and tap 'Yes' on both devices and 'Complete Setup' on the terminal.