How can one deal with a husband who succumbs to the daughters' wishes and contradicts his wife's statements in front of them, claiming that her role is limited to serving the children?

Advice for the couple: The husband should fear Allah Almighty and observe his wife's rights concerning housing, clothing, food, and respect. He should not humiliate her in front of their children. He must treat her well and choose the best approach for that, as the bad approach he uses will have a negative impact on the morals of their children in the future. As for the wife's advice, it is: patience, endurance, and fulfilling the husband's rights, even if he falls short in hers.