Beautiful colors! Orchids are like people, some of them like living with me and some don't. Usually primary hybrids are vigorous plants though. You might be right about the temperature. C. lawrenceana is from low elevations and can stand high temperatures but C. mossiae comes from the cloud forest where it never gets over 80 degrees. I don't know what would help your orchid but a couple of my catts, that weren't doing well, have improved since I moved them from pots to open wood baskets. Of course, now that it's blooming, you may not want to change anything. Good luck.