Namco Museum help?

I'm sorry if this is the wrong place to be posting this, but I'm not sure how to go about this.

For those of you who have Namco Museum for Nintendo Switch probably know there is an online leaderboard. I take pride in the legitimate scores I come out with and would never cheat. However, today I turned on my Switch out of sleep mode, and I was still in a game of Tank Force. The game asked me to connect to the online rankings and upload my score, so I did. Later, I noticed I had a ridiculously high score for Tank Force, and I feel terrible because it likely looks like I hacked or something.

I wanted to ask here and see if anybody could point me in the right direction or give me an answer please. I'm just stumped and really bummed out.

http://imgur.com/uWQqcgy