How is what happened to him any different than alien abduction tales?
The Bible says that we will know those that belong to Him by their fruits.
If Pio was saying, teaching, promoting things that were against scripture then he most certainly wasn’t filled with the Holy Spirit.
Nowhere in Scripture are bleeding wounds shown as being a message from God. No message from God has ever been close to that.
As for apparitions, fallen angels can appear to men as whatever they want to appear as.
The Bible warns us not to be fooled by signs and wonders.
All that matters in determining if Pio was a Christian is to examine his fruits and compare them to Scripture. If he was following and obeying Christ as instructed in the Bible, and he was not following any doctrines of men or demons, then we will know he was God’s as well as we can.
Other than the Resurrection, Jesus said, no sign will be given.
What exactly would be the purpose of having some individual manifest these signs?