Questions in Studying the Book of Faith – The Ontological View

Hello Rabbi, the question is regarding the Rabbi’s first notebook on the subject of Anselm’s ontological proof – in his proof “At the Heart of the Argument”, as the Rabbi writes, there are several assumptions that I do not understand. 1. Why is something that is both understood by me intellectually and understood by me as existing in reality greater than something that is understood by me simply as a concept intellectually?
2. In addition, like “there is no obstacle to conjuring up in our minds the image of an existing God,” there is also no obligation to him, meaning I have not encountered an object in reality that I can say exists in reality and then I would have a higher idea than the first idea I had.
3. I also didn’t understand why the concept of God includes his existence?
In addition, I wanted to know if it is possible to ask the rabbi questions on WhatsApp or whether the rabbi has a student who answers such questions (I simply don’t want to bother the rabbi, so if there is a student who answers questions, it would be better if there is one).
Thank you in advance. Happy Shabbat.