As Talan said, if you're going to report bugs, please be as specific as possible.
What kind of platinum armor were you making?
Which craft hall were you using?
Did you get a message stating that you acquired such items?
Can you get a screen shot showing both successful completion of an item and that you got no armor as a result.
Even if you've posted about this elsewhere (i.e. grievances) it's helpful to not have to hunt around for all the details.