Steam client loading in Japanese now?

Every time I have loaded up pso2 on steam, the client has always appeared in English and automatically logged me in through steam. Now the client loads in Japanese and asks me to log in with my Sega ID? How can I fix this? and will I still be able to log in with my original character once I do?

Do you have any error before game launch?

@Sora I do not

Try this. Maybe it help in your case.