The nickname I used before is sergeant.97
It’s been a while since I changed my nickname, but the live match career stat says “stats not available”
It’s the same even if you link both the steam and uplay accounts to the tracker ID, delete the tracker and reinstall it.
The current nickname is Roypapa.
Thank you for your report. I checked your recent matches on our website, it looks like your profile is recognized as “플레이어” in the app during a match.
Could you please confirm if Korean is your current language in the game settings? If so, you are probably using a privacy setting which hides your nickname (“Appear as You” in the English client) and prevents the app from detecting your actual nickname during a match.
Please disable this privacy setting and let me know if it resolves the issue for you.