The Golem project has announced that they are performing a migration from GNT to become an ERC-20 token beginning November 19, 2020. 

We will support the migration for Poloniex GNT holders. Poloniex customers who hold GNT do not need to take any action at this time but here is some important information to keep in mind: 

• Starting on Thursday, November 19, 2020 around 17:00 UTC, GNT deposits, withdrawals, and trading will be disabled while we prepare to perform the migration. 
• We will begin the distribution of the new token to all eligible customers at a ratio of 1 GNT = 1 new token. Once the swap is complete, we will sunset our support for GNT and the new Golem ERC-20 token will persist as the sole Golem token supported on the exchange.
• We will enable deposits, withdrawals, and trading for the new token soon after the migration is complete.

For more information about the Golem migration, please refer to this article from their team.