I can't change my account phone number

 
Hello
I changed to a new phone number, but I can't change it by entering the number I received via SMS in my account settings. How can I change it?
 
yasuhito:
Hello
I changed to a new phone number, but I can't change it by entering the number I received via SMS in my account settings. How can I change it?

Contact the Service Desk for that:

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