I'm sorry for you loss :( I've just checked through your other threads and posts, it looked like you were doing everything perfectly and WOW your setup looks amazing!!
Did you scrub the plant with soap etc and change the soil before you put it in the cage?? I have 3 plants in my cage! This is awful... if this happened even after you cleaned your plant then I'm taking mine OUT!
Can we see some pics of your cham? That would help. Just want to echo what Psychobunny said, over a month with no UV is bad news, a vet visit would be the best option just to be on the safe side.
Hi and welcome. I have a male veiled who's just turned 3 months old. He's slightly longer and chunkier by the looks if it. So I don't think yours can be any older than 3 months. Hope that helps. Great looking cham btw.