My boards profile shows someone else instead of mine

My boards profile is showing someone that is not me. It must be showing someone that previously had my summoner name. It is showing me as level 30 when I am actually level 63. When you click on my match history, it takes you to someone else instead of mine. I also never posted those responses. Also, when you hover over my name, it shows my old summoner name...but takes you to a different account when clicked on.