Transferring files on Go 2

How can I transfer files on to my mac? I connect the cable but it does not show up. I've downloaded the Insta software but that doesn't see the device either.

Am I doing something wrong or does it not allow me to transfer files direct from device to a mac? Couldn't find any help in the docs about it, only through the phone app which is not practicle and only of real use for social media edits.

Thanks,

Terry