During the 1930s, Mathilde's ballet school prospered, allowing Grand Duke Andrei and his family to have a comfortable, yet modest life. He helped with the financial part of running the school, but continued to be afflicted by ill health due to his weak lungs. Although uninterested in politics, he continued to actively support a number of organization; he headed the Guard association, the Russian Historical and Genealogical Society in Paris and he was an honorary chairman of the union of Izmaylovsky Regiment. Andrei Vladimirovich also kept in touch with his Romanov relatives, particularly his brothers and many of his cousins, such as Grand Duke Dmitri Pavlovich, Grand Duchess Maria Pavlovna, Jr. and Prince Gabriel Constantinovich. His relationship with his sister, Grand Duchess Elena Vladimirovna of Russia, became strained as she never truly accepted Mathilde as a member of the family.