Thankyou for taking out time to reply brother.They should focus on addressing the specific reasons for refusal when applying again. For the visa to be granted, it's crucial to show strong ties to their home country, such as stable employment, property ownership, or family responsibilities. In this case, they need to provide clearer documentation proving financial stability for the mother and sister, as well as stronger evidence of employment and ties to their home country for all applicants.
I agree with your opinion.
Can you please tell how to apply for reconsideration?
I have prepared a letter for it