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Changes in imports file to address the lock and unlock function loophole.

New variable: bool private _renounced;

This will prevent the unlock function from working if ownership has been renounced: function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); _renounced = true; }

Once renounced → renounced = true. Then unlocking is not permitted: function unlock() public virtual { require(_previousOwner == msg.sender, "Only the previous owner can unlock onwership"); require(_renounced == false, "Cannot unlock renounced ownership"); require(block.timestamp > _lockTime , "The contract is still locked"); emit OwnershipTransferred(_owner, _previousOwner); _owner = _previousOwner; }

Changes in Cync_final to adress the "out of gas" error: Added the following line “require(_excluded.length < 10…) to avoid out of gas error.

function excludeFromReward(address account) external onlyOwner() {
    require(!_isExcludedFromRewards[account], "Account is not included");
    require(_excluded.length < 10, "Cannot exclude more than 10 accounts");
    _exclude(account);
}