Can I reverse Hyperliquid USDT deposit to USDC address via export/importing keys?

I deposited money to Hyperliquid but forgot to exchange my USDT into USDC before transferring and so the money has been successfully deposited and can see it on chain but not in my wallet/able to use it on Hyperliquid as I sent it as USDT and not USDC

I’ve contacted them on Discord and they said as long as I signed in via email I can somehow export the email wallet address or something like that and somehow get it back. Is this true? Even though the USDT was successful deposited to my address that only accepts USDC (Arbitrum network)

I had a bunch of DMs saying something like this but I just assumed they were trying to scam me so thought they were lying

So if this is a thing, how can I do it?

I will not reply to DMs

EDIT: Thanks guys! :) Honestly thought I had lost the money for good