Important: If you find that there are legitimate items you owned that were removed, please contact me in game (username: Dew), on Discord, or email support[at]highspell.com. There are snapshots of the database before the dupe occurred, as well as trade logs, so I'll be able to verify your items and return them to your account.
Also, I would recommend not buying/selling any Santa Hat or Christmas Present for the time being, as they might end up getting removed, causing further delays for any legitimate item to be reimbursed.
For transparency, here is the total number of items that have been removed thus far (note that this may include a minimal number of legitimate items which will later be reimbursed to players if necessary):
- Coins: 600,000,000
- Red Santa Hat: 1,923
- Green Santa Hat: 1,605
- Blue Santa Hat: 1,473
- Christmas Present: 447
- Legendary Scimitar: 104
- Legendary Longsword: 4
- Helmet of Melee: 24
- Helmet of Magic: 38
- Helmet of Range: 42