IDK if this is the proper forum section for this but I'd like to change my name

[Mantis_Religiosa 727]

So when I downloaded War Thudder with Steam I nicknamed myself as KamikazeRico, but IDK why some time later the name switched to my E-mail address (without the @ . com) and I wanted to change it to "Tenodera_sinensis" (Chinese mantis, pretty common in US and probably starting to lurk in Europe) but because of the auto change when I went back to KamikazeRico the two attempts expired (wait was it two attempts before now only one?) I. Kon't. Dnow. Ecksdee (Edit) well I remember it was only one but I is of going of mad pls help of meeee

 

If there's no other way but paying, how could I do it? 

Edited January 8, 2021 by KamikazeRico