Poloniex to Support the Polygon Ecosystem Token(POL) and Enjin Coin(ENJ) Network Upgrades

Dear Poloniex Users,

Poloniex will support the Polygon Ecosystem Token(POL) and Enjin Coin(ENJ) Network Upgrades with the following plan:

• Poloniex will suspend the deposit and withdrawal services for POL at 09:30:00(UTC) on December 9, 2025;
• Poloniex will suspend the deposit and withdrawal services for ENJ at 14:30:00 (UTC) on December 8, 2025;

You may deposit POL and ENJ in advance. We will handle all technical requirements involved for all users.

Please note:

● The Enjin Coin(ENJ) Network Upgrade will take place at block height of 13229687 approximately at 16:30:00 (UTC) on December 8, 2025;The Polygon Ecosystem Token(POL) Network Upgrade will take place at block height of 80084800 (approximately at 10:00:00 (UTC) on December 9,  2025;

● The trading of POL and ENJ will not be affected during the network upgrades.

● The network upgrades will not result in creation of new tokens.

● Poloniex will resume deposits and withdrawals for POL and ENJ once we deem the upgraded network to be stable, which will not be further announced.

For more information, please refer to:

https://enjin.io/blog/enjin-blockchain-sentosa-upgrade

https://github.com/maticnetwork/bor/releases/tag/v2.5.2

Poloniex

December 8, 2025