Thanks for the kind words guys!
I'll be looking for the ornata after tomorrow. New terrarium is ready, but i'll get another plastic container cause i feel that one was Pixies, i will trow it away.
New terrarium:

It's an 18x18x18.
Btw i was changing the substrat every week with pixies, and cleaning the plastic box each time, either with bleach or ammonia. For sure i rinse it very well after. Do you guys think it's better to get some reptile safe cleaner?
I understand that the red legs are like bacteria and stuff, but i cleaned the guy often so i guess he arrived like that. Btw i cleaned is plastic container but the terrarium itself, since it had no substrate i did not clean it for a while, maybe i did rinse it two times in two months. But i guess this could not be the cause.
Maybe he already arrived like that and thats why he didnt eat.
Ps: I use ecoearth, lets say if i make one brick and store it for a month, is it considered clean of bacteria if it's dry? Cause usually the stuff don't dry quickly, and i kinda don't want the substrat to be water.