Hi, i think i can fix this for you. Try going in bitcoincore and use list descriptors true command. This will output the descriptor and master priv key. Then once you have that key, go download electrum wallet from www.electrum.org. Start create standard wallet, then next select use master key then type your key from bitcoin core. Your wallet should show up on screen. Maybe you can find your address you had the money in. How much was the loss?

Maybe i can save the company and you can reward me. Let me know how it goes or if it work.