My stats got mixed up with a different account?

Since 16 december my stats are mixed up with someone else? Or my stats are the same from when I started playing rocket league. I already linked up my account with epic games, but this did not change a thing for me. Does anybody what else I can try?

I am still diamond in all modes. But shows like im silver…

Link to account;

Hi @bote1995,

Unfortunately, Rocket League still does not support some special characters in nicknames of EGS users and we might start getting stats for a different player in your profile because of that issue (note the difference between botè and bote):

We highly recommend you to use only English letters and digits in your EGS nickname. It is currently the only way to fix this issue.