What is that and where can I find that?
You should have probably received a notice or some sort of link with instructions on how to start your claim process on your email address registered with Poloniex. If you didn't, then that's it. There's nothing you can do.
Yeahh, only eligible traders who traded certain cryptocurrencies on Poloniex between 2017 and 2019, will receive compensations ... ( in fact, the transaction fees charged by Poloniex will be returned back to the traders).