Paph. brown spot

[igosset]

Hello All,
I recently purchased(about a month ago) a Paph. Shin-Yi Heart 'Chouyi NO.9' x Paph. Shin-Yi Weber 'Chouyi Web' from a local grower. It was in bloom, and you could already see the the petals and pouch starting to separate and open. Fast forward to this morning, and me noticing a brown spot on one of the leaves, and also noticing the new tiny leaf(?) growing out of where the spike comes out at the bottom of the plant completely brown and shriveled, even though it is getting larger.
The bud itself seems "stuck". Although it has opened more has it been sitting in the same state of for a week or so.
I water every 5 days and fertilize using 30-10-10 at 1/4 strength every week. It sits on a table near my a west facing window.
I am concerned as it started out great but in the matter of 24 hours has taken a bad turn.
Any advice on what it is(rot?) would be aprreciated. I have an onc and a few paphs that I have really good luck with and bloom multiple times a year. This is my second paph and I can't seem to keep them going
Ian