Conquest hard, sector 3, battle 7 golden path issue

Hi, I think you have a annoying bug. Conquest hard mode, sector 3, the 7th battle on golden path. No matter what gl team I use, and I have 6 of them all very high, I cannot pass it. I tried also the battle which should be easy, same issue. I bring all the opponent to 1% but they do not die. I have waisted a lot of resources with this but nothing is working