I don't see anything at the end screen that calls out elo boosting. This duo was so clearly being boosted it was unreal.
One account never had any jungle games in the last 100 games played and all of a sudden his last 7 games are jungle and puts out insane numbers like 23/5/3, 20/6/2, 17/6/6, 22/7/4. Prior to being boosted it was normal game scores all the way back until the last few weeks of S8. Then the number became insane again.
This account is so clearly being boosted, how do we report it?