Coinbase Vault multi-sig account, both seeds + password in hand, on paper, BUT the usbkey that I stored the three xpublic keys on is toast.

Per all of their documentation, the three xpub keys are available via the website under Vault details. However, that appears to not be true for my account. Support has been totally useless and non-responsive. I tried the mobile app as well, and multiple browsers.

Does anyone know how I may be able to "recover" what should be _public_ keys for my multisig account?