That link would, of course. We will have to see if Joey gets his eyesight back.
non constat de supernaturalitate (it is not established supernatural)
This is not the slam dunk "constat de non supernaturalitate", but the Holy See determined that it would not usurp the Bishop's right to discern the matter. The bishop has said it will not be revisited. A future bishop could techinically re-open the matter, but that's highly unlikely. Given the time-sensitivity of the messages, it won't serve God's will to approve Garabandal when it's message is no longer timely. So at least in my opinion, Garabandal is not legitimate. Padre Pio is not infallible, so even if he opined that they are authentic, it means nothing.
FWIW, since the visionaries predicted John Paul II to be the last pope, there doesn't seem to be any credibility here.