You can change your plan from this page.
Frequently Asked Questions about changing plans
The following help pages are available.
・What forms of payment do you accept?
・Is it possible to downgrade or change from business plans?
Regarding changes to details of the business plan agreement
Changing an existing business plan depends on the type of business plan to which you are subscribed.
Please confirm which business plan you are subscribed to from the Service Plans page.
When the usage plan name contains a number (e.g., "Business Plan 10")
When "Number of Licenses" is shown on the "Confirm Usage Details" page