Log in problems

Hello, I tried today log in and I received this error:

A technical issue has occurred. Try accessing the site again. If the issue still not resolved, please contact the SQUARE ENIX Center (or support center, this line is cuted).

What should I do?This is a global issue or only I have it?
I will be happy for some info.
Thx

EDIT: It's now all ok,I restart my PC but I don;t know how to delete this post^^

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