Neither can be said to be wrong. Tantric Buddhism is based on the teachings of the master. The masters in different regions and sects have different inheritances, and the methods and pronunciations of chanting are also different. It is recommended to use the pronunciation passed down to you by your root guru as the pronunciation standard. For example, my master recited like this: "

Om Ah Hum Ban Za Ge Re Bai Masedeh Hum" three times each time.