Simple erc20 token, but dextools doesn't show buy and sell tax

Smart Contracts
1

Hi, i'm trying to create a simple erc20 token with 0/0 fee, but after I create it on dextools show '' Unknown '' on buy and sell fee, i know the fee are 0/0 but i need them to show on dextools to make people trust the token, Does anyone know why dextools doesn't detect the gas fees?

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

contract Lalla is ERC20 {
    constructor() ERC20("tuntun", "tun") {
        _mint(msg.sender, 2000 * 10 ** uint256(decimals()));
    }

    function _transfer(address from, address to, uint256 amount) internal override(ERC20) {
        super._transfer(from, to, amount);
    }
}