Paphiopedilum help

[gore.m]

Hello,
I would like to ask you help with my paphiopedilum. I have them about 4 yeas, they came from common Holland distribution. One of them flowered two times after buying, next one never flowered again.
I was trying feed them with orchid fertirisers during summer, but there is only one flower and leaves looks not healthy (except new ones).
So:

1) Do you recognise what sort it is?
2) I have plan, to repot them after it bloom out. Is it ok to repot them in this time and is it common orchid pine bark substrate adequate?
3) Do you consider leaves bad looking (I mean color, I think that dark spots are from sun) or is it common for paphiopedilums?
4) Do you have any tip, what would you do with them to kick them up, if those would be yours plants?

Thanks you
Tom