Am the pround owner of a Marshall Code 100 Combo, or rather, I used to be proud.
My problem is your bluertooth app.
It simply doesn't work.
I have installed on my Huawei phone (android) and Nexus 7 tablet.
It used to work fine on both , now the app appears to be corrupted and the display is completed stuffed. ( yes I have uninstalled, rebooted and re-installed).
Also it doesn't recoginse my credentials. I means the program asks me to login (same credentials as here), but there is no way to enter my details, no places to type my email addess etc.
Have you now stopped working on the Gateway app?
I need to know, as if you have, I'll be getting rid on the amp, as it's no good to me as it is.