Got dupes :(

I traded my 8 exalted relics for a Shiny Nessie and a Lunar Nessie, im so scared because I found out they were duped, and basically the guy scammed me. Will my account get banned? I grinded a lot on fisch, so im scared for it to all just go away :( I don’t know what to do with the dupes, anyone please help me.. by the way, the scammers user is Jimmysam10.