The priest may be rock solid and thoroughly trustworthy, but I have no way to know for sure either way.
It's up to bishops to police apparition groups claiming to have special messages or prophecies. Legitimate supernatural events are sometimes obscured by other kooky or demonic distractions which surround authentic spiritual phenomena. No way to tell for sure just based on accounts in newspapers and magazines. It's unfortunate, of course, if anyone gets lured into something false. Just bashing the victims, as some religious vigilantes do, usually only spreads more discord and confusion.