If you need to change the plan, Click on “Personal Center” - “Manage Subscription”.
You will find the 'Change Subscription' button on this page. Simply click it to select the plan you wish to switch to.
Change plan during the free trial:
The new plan takes effect immediately and is valid for the remaining trial period.
Change plan during the subscription:
The new plan takes effect immediately. The remaining fee from the original plan will be refunded, and the cost of the new plan will be deducted. The new plan's billing cycle starts from the day of the plan change.
For you have any other questions, please check out the link: Product Feedback