Claiming your BitcoinGold in Trezor

[Uberse]

Trezor is offering a BitGold address that I cannot find using BIP39. I'm reluctant to use it until I know its private key. The address starts with an 'A'. Apparently an 'A' address is a SegWit address. I'm using the standard parameters but am apparently missing something. I've looked for an address converter but cannot find one. Or maybe I shouldn't worry about it?