I was playing a second leg cup game. Won the first game 1-0(away game). In the second game I was winnging 1-0 and the opposition team had a red card with 10 men in the field. At the beginning of a second half he made 3 subs and started playing with no defense players. His formation was like GK-ML-MC-MC--MR-AM-AM-ST-ST-ST. He won the game 2-1 and I got eleminated from the cup. Now IRL I should have a crushing win. Is this some kind of a cheat? If so what should I do?

PS. I am at level 7 if it does make any difference.