Where can i report this, in order to get help from SE ?

[Mhaeric]

Just this would not be a restoration of an Item mistakingly discarded. This would be solving a bug where a item that has dropped to someones inventory never showing up.

They did the same thing when purchasing an item with myth stones resulted in a different item appearing in your inventory, despite that being a bug. People were told they had to use their one time replacement, and those that pressed the issue further were accused of submitting fraudulent claims and temporarily banned.