It seems I heard different issues the same as yours and there's no clear answer from them if the problem has been resolved.  The same happening on this Reddit thread that I have found and it was posted two months ago, someone Kraken staff answered there but there's no clear response at the end if the problem has been fixed.

This is might very risky for them to recover your fund and might lead them to be compromised their hot wallet, if I'm not mistaken, they ask for payment for this and if you are willing to pay, probably there could be a chance.