It looks that your account is unauthorized to use, but I don't know why really
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It's a account lock due to suspicious activity (usually logging on from a vastly different IP). You can try waiting a few days to see if they remove it, or you can try sending an email to support, but if you are outside of Japan, don't expect much help from them.
I have just created an account and I won lot of weapons of one, two or three stars and that. What is the best to do with them? Sold or anything? And where?
Which potential is better to unlock on Vitol Orbit for RaTe with PP restorate skill?
Does grinding the Knuckle Chase Ring increase the dash distance?