What can I do to reconcile my parents and my wife, especially after two years have passed since my parents became angry about my marriage, and my father refuses to see me or speak to me? And is my not being blessed with children a punishment from God due to their anger?

There is no sin upon your siblings for maintaining ties with you, because obeying a parent in cutting off kinship ties is not an act of righteousness. Delayed procreation might be due to the supplication of one or both parents against you. You should have convinced your father and gained his رضا (رضا) before marriage. Now, you are not obligated to divorce your righteous wife. Rather, you must strive to honor your parents through all possible means.