BUG - CHAMPION STUCK

Dear Support Team,

Hope you can help me.

I have a big problem, my champion cannot move when I click the right bottom. I can still do everything else, I can buy and sell items with my mouse and at the shop my mouse works. I tried to create custom games and do literally everything, recall and use the shadow of zed. I can even flash in any direction I want but still my champion doesn't move.

Could you please help me?

Many thanks Seb