Who determined that this interpretation is correct? Are you God? There is no way to determine this, other than verses pulled out of context.
The idea that there are no longer miracles and faith healings is tenouous indeed, and scripture does not clearly state this, despite the attempts at pulling verses out of context to attempt to support a very weak position.
You just told me the subject is closed. With you. Are you interested in continuing with it, or not? Because I can let it go, it’s between you and God now.
I have been reading the messages in True Life in God. Jesus frequently tells us to read Acts 2, for example, to tell us that His miracles didn't stop with his "death":
I have said again and again, that I will pour out My Spirit on all mankind and you shall prophesy; young men shall see visions and your old men shall see dreams; even to the least of you I shall pour out My Spirit; I will display portents in heaven above and signs on earth below, creation! have you really understood this prophecy?
Also, if you go to the Search feature and put in "Medjugorje", then search "The Messages", there are 6 references that come up.
I offer this in the hope it will be helpful. I've not read but the first few years of messages, but I have found a great deal of comfort and understanding reading TLIG so far.