BitGo BTC Wallet... Gone?

G'day team, hoping you folks can give me some guidance here. I've raised a ticket with the BitGo team but no response yet.

Logged into BitGo today to get my balance for some tax reporting I need to do and my BTC wallet is just... gone. Not zeroed out like I'd expect if the account had been hacked into and I could at least see the outgoing transactions - it's just missing entirely. All I have is the essentially worthless BTG from the 2017 split.

Obviously, this is more than a little concerning... I've still got my KeyCard so I may try their recovery tools but I get a deep, sinking feeling I've been played.