what should I do? I had a trophy in the lobby for participating in the New Year's event, and now it's gone

[charlinks1201]

what should I do? I had a trophy in the lobby for participating in the New Year's event, and now it's gone
My steam profile: https://steamcommunity.com/profiles/76561198374113181/

 

[kidgrit]

It happened to a lot of people I think they accidentally handed them out to people who weren't supposed to at some point