Description:
Ignoring return values from ERC20 token transfers can lead to undetected failures if the token does not follow the ERC20 standard.

Affected Functions:

1. TokenDivider.transferErcTokens(...)

2. TokenDivider.sellErc20(...)

3. TokenDivider.buyOrder(...)

Impact:

• ERC20 transfer failures may result in incorrect contract states or fund loss.

Recommendation:

• Always check return values for IERC20.transfer() and IERC20.transferFrom():

  require(IERC20(token).transfer(to, amount), "Transfer failed");