Thanks for your answer. Unfortunately, I already tried but it doesn't work. My "playerpref" is :
,1,0,1,False,False,False,0,True,True,0,255,255,1,0,0,0,True,0,False,0,1,,6,16,1977,,2,True,,False
Do you think I could try to change something else that birth date?
Sorry, it still doesn't work, even with the last version of Among Us. Now I can use PlayerPrefs to choose a name instead of getting a random one, but I'm still unable to sign in (errror: PlatformNotSupported while I'm on PC) and to use free chat, even if I change dates. I'll try to contact Innersloth support. Thanks for trying to help me.