I am still waiting to see that supportive letter that Fr. Gruner said he received from Francis a few days after Francis was elected. The letter being sent to Fr. Gruner when Francis was Cardinal Bergoglio. I think Gruner said he had a couple of supportive letters not just one..
Even if privacy means he cannot publish them, then surely Pope Francis being so into Fatima and supportive of Father Gruner, which is what Gruner and yourself claimed those letters contained, supportive comments, not merely polite form letters thanking Fr Gruner for his large pack of Fatima literature; it should be child's play to get an audience with Pope Francis and have him regularise Father Gruner, at least, and maybe even get the consecration of Russia underway.
This after all is a humble and available Pope who cold calls people including his old car mechanic and newspaper seller. How hard can it be for Father Gruner to get an audience with him?