LOST MY 3 KEYS FOR TRIALMASTER FIGTH

I was doing the chaos trial for ascension points, I bought the keys I was missing, and when I got to the end I opened the door for the fight against the trialmaster, my game disconnected and I lost the keys, I went back outside and did the 10 waves d again and at the end the door was locked, asking to put the keys back in. I lost 35ex.

TY.