it is hard to recover I'm afraid with so little details you have given us
so if you have access to that system or site and its still alive, so it might be that btc still on account
but, honestly, i would not be so optimistic.
This, i would not be optimistic also, because now, when this company is still alive, and gave 1 BTC To user accounts, it deleted old accounts for sure, because then 1 BTC could be $5 but now its $9500, they would go bakrupt quick.