Having Trouble Reversing a Scam Trade Within the 7-Day Window? Read This

If you go to your inventory and click on Trade History, but unfortunately see a message saying "You have no trades that can be reversed, and no trades on hold", even though you clearly have a recent scam trade that should still fall under Steam’s new 7-day reversal policy, don't lose hope - try this:

Login at help.steampowered.com, then navigate through the following categories:
Trading, Gifting, Market & Steam Points > Items > My items are missing or stolen > I lost items in a deceptive trade

This should bring you to this article: https://help.steampowered.com/en/wizard/HelpTradeRestore

For some people, navigating this route through the Support portal seems to work when navigating through the Inventory and Trade History page fails.

Good luck.