OpenSea: Optional platform fee refund
OpenSea introduces an optional refund for platform fees paid during Waves 3–6 of the Treasure Chest rewards program.
Users have two choices. Take the refund: receive back platform fees paid during Waves 3–6, refunded in SOL, WETH, or USDC within the April 2–22 window. If users take the refund, their Treasures will be removed and will not count toward the $SEA token distribution.
Keep your Treasures: rewards remain in the account and will be considered during the $SEA TGE.
A support article provides full details.