Matrimonial and custody matter

Dear sir/Madam, I am married for past 17 years have a son 16 years and daughter 10 years for the past 2 years my wife is staying with her mother's house I was sending her money every month for kids.she told she will come after 2 years.Now she has put for Divorce.I stopped sending money  because of covid issues.Now my wife is not allowing my family to speak to kids and visit them.so please guide me. Thanks Shaji Sekharan