It seems that my phone is connected via Bluetooth,
but on my iphone SE I do not see a connect block on the Gateway
only a scan for amps block and this does not do anything.
Help
Try this
https://my.marshall.com/support/faq/838/code---gateway-bluetooth-connection-troubleshooting
step by step.
Once I had my amp connected via bluetooh I closed the app and reopened it. Then it appeard. The scan feature never worked.