So it's all working now! Excellent. I was just going to say there is a selectable option in VCDS that allows audio streaming you needed to turn on in the slightly older models, but being 2011 it should already be on... seem it is

Plan B: (and it's still an option) would be to upgrade the whole headunit to the RCD330+ which provides CarPlay and Android Auto (if you get the right model). Apparently the sound isn't as good, but it does provide Bluetooth, RVC support (although over composite and not CVBS like the OEM (there is an adaptor)) and is a factory unit. You do lose the built in NAV, but I tend to use Waze over the RNS most of the time anyway.