My Paphiopedilum Ansum needs help

[Rosiefuture]

Hi, I have two paphs, one has the label paphiopedilum ansum but I don't know what the other is.

They both look very sick. They produce new growth but as the leaves get bigger they turn brown and die.

I have no idea how to treat these orchids so I'd very much appreciate it if anyone would tell me what paphs like in the way of growing medium, light, watering, fertilizing. The one without a name is very small now with just two new growths. I'd like to try to save them if anyone can help me.

BTW I'm in Western Australia and all my orchids are outside.

Thanks Marion