Hotmail has one purpose. The purpose of the THF is not the PM system. You should have had a backup if the information in your PM box was so important. And as far as the question about current operation, the best way to find out is to TRY IT.
I did not get bothered by the PMs being removed, it seemed to have been necessary. But the PM system is part of the service offered by the THF, if it is offered, it should work. We see "PM sent" or "send me a PM" all the time. I have used it for many transactions.
I am not upset at the management/moderators, I just think it is part of the deal.
"And as far as the question about current operation" I am not following you there.