brown spots

HELP! My Rothschilde-Phillipinense is in a death spiral! I recently repotted my Paph Roth in fresh medium: the same medium it has been thriving in for years. It soon developed ugly brown spots on its new leaf, which also spread to other leaves. Can anyone tell me what's happening here, and what...

Hi Everyone, I just received this orchid from a relatively well known eBay seller and it has some brown spots on its leaves. I’m not sure if this is sun damage or perhaps water was left on the leaf for an extended time? Does anyone have any idea if this is just cosmetic or is it something more...