Don't know how to lose a game? Play it on the lowest scale of effort, then, whenever you want the opponent to score, switch to the middle effort scale.
How do you use the arrows? I use Chrome and only see the teams displayed first (for example, the first 9 in the league), the arrow which I thought should show me the rest of the teams doesn't work ,same for all the arrows.
Did your level progress disappear too? Something might have cleared your flash storage..