What should I do when maintaining kinship ties causes severe harm and envy from relatives, despite my offering them assistance, which leads to envy, the evil eye, and many problems?

If maintaining kinship ties causes harm and problems, there is no sin in keeping a distance from them to the extent that avoids harm. Scholars have agreed on the permissibility of a Muslim abandoning his brother for more than three [days] if he fears that speaking with him or associating with him will corrupt his religion, or cause him harm in his religion or worldly life. "Al-Sarm Al-Jameel" (Beautiful Severance) is an abandonment that is not accompanied by harm or abuse.