@kingsmanhsu-gmail-com 您好

12/17系統有段時間的寄信功能失效，現已修復
再麻煩嘗試啟用一次

造成任何不便，敬請見諒

Casper

Hi David,

For the users who registered before October 1st, 2021, we provided a complimentary one-year Premium subscription which will end on September 30th, 2022. You can check your subscription in myviewboard.com (Path: Avatar menu > My Subscriptions).
The complimentary one-year Premium subscription can't be cancelled and your plan will be updated as Standard when the Premium subscription expires. Standard plan is a basic and free plan for all myViewBoard users.
If you subscribe any plans in the future, you can cancel them in My Subscriptions.

Let me know if you have any further questions.

Regards,
Casper