From June 28 to July 2, the "withdrawal" button is inactive.
Support response: July 27: Regretfully, the technical issue has not yet been resolved. I sincerely apologize for the inconvenience.

July 29: This has nothing to do with your account, though, as this system is local and many people are unable to utilize it. I sincerely apologize for this incident, and I promise that we are striving to find a solution as quickly as possible.