Do Jehovah's Witnesses know the Modern Hebrew pronunciation of the Name "Jehovah"?

many claim that the name should not be used because the original way to pronounce it is unknown today. Ancient Hebrew was written without vowels. Therefore, no one today can say for sure exactly how people of Bible times pronounced YHWH. However, should this prevent us from using God’s name? In Bible times, the name Jesus may have been pronounced Yeshua or possibly Yehoshua—no one can say for certain. Yet, people the world over today use different forms of the name Jesus, pronouncing it in the way that is common in their language. They do not hesitate to use the name just because they do not know its first-century pronunciation. Similarly, if you were to travel to a foreign land, you might well find that your own name sounds quite different in another tongue. Hence, uncertainty about the ancient pronunciation of God’s name is no reason for not using it.