That seems to be the latest versions of the BTG app and Ledger Live... So, when you attempt to add a BTG account in Ledger Live, what exactly is happening? How far through the process do you get before things don't work?

Do you get past the "Connect and unlock your Ledger device" and the "Navigate to the the Bitcoin Gold app on your Device" steps? Do you see it doing the "synchronising" step:


What does it say when it "finishes" this section... does it show any account?