Important Reminders：
24-Hour Withdrawal Lock：For your account's security, all withdrawal functions (both TWD and cryptocurrency) will be suspended for 24 hours after you successfully change your phone number.
If You Used a Telecom Bill for Verification：If your original secondary ID was a telecom bill, you must re-upload a new secondary ID after changing your phone number. MAX will review the new document within 3-5 business days. During this review period, all TWD transactions will be temporarily suspended.
If You Cannot Access Your Old Number：If you no longer have access to your old phone number (e.g., it has been disconnected) and cannot receive login verification codes, please contact customer support directly.
Email：max@maicoin.com
Phone Support：02-2722-1314
APP Instructions
In the app, go to the Profile > Two-Factor Authentication > Reset SMS Verification > Change.
Follow the prompts：Enter your old phone number > Tap Next > Enter your new phone number > Request and enter the verification code to complete the update.