[n-a] In game avatar and title

And what to do if the mobile game account does not open on the site? and acc from pc to mobile.

Like I said, you can only change your avatar and backgrounds through PC.
If you want to change it and do not have a way of doing so, get someone else to change it for you. But your account is your own responsibility and I won't get it back.

The account you play using our mobile app is interchangeable to the one in our app.