Bithumb said it will temporarily suspend deposits and withdrawals for Polygon Ecosystem Token, or POL, starting at 9:00 a.m. UTC on Aug. 18 as part of a planned network upgrade. The exchange said POL trading will continue normally during the maintenance period, although settlement may be delayed until the upgrade is completed. Bithumb did not specify when services would resume and advised users to complete pending POL transfers before the cutoff. Exchanges commonly pause token movements during blockchain upgrades to reduce the risk of transaction errors or fund loss while the underlying network is being updated. POL is the native token of the Polygon ecosystem, and the broader market impact is expected to be limited because the upgrade was scheduled in advance and does not change the token's core fundamentals.