Phragmipedium pearcei

I ordered two Phrag. pearcei and they both arrived in the same box at the same time wrapped similarly. Took them all apart and set them out together with the 3 other orchids I bought with them.
One pearcei has the spike from a previous flower and was the smaller of the two plants, but seems pretty healthy.
The larger one of the two had several dead leaves and developed several more over the next few days. At least half of the leaves developed brown tips and brown patches in the middle of the leaves. I cut off the dead leaves and began spraying with a fungicide. Still more dead leaves and brown leaf tips.
I decided that I should repot it and change out the potting medium. It is now in a slight courser bark, perlite, charcoal mix with some sphagnum moss for added moisture retention. I water with rainwater.
There are still many brown leaf tips but no more added dead leaves, at least for the moment.
So, I am not thrilled and can't guess its long-term prognosis. All the other orchids I ordered show none of the same behavior! No brown leaf tips or dead leaves.