The free trial period for a guest user is 30 days from the date on which the user is invited to the guest space and logs in to that space.

When the 30-day free trial expires, the license status of the guest user is automatically changed from "Trial" to "Required."

You can check the license type for each of your guest users on the "Guest Management" screen.
Checking the Guest Users List

Make sure to take the appropriate action depending on whether you want to keep using an account or stop using it after the free trial period has ended.

If you want the guest user to continue using Kintone after the trial period ends, a guest account license for the user is required.

Purchasing Option Services (Only available in Japanese)

If a guest user continues using their account without a license after their free trial period has ended, their use of the service may be suspended. You will not be charged automatically, so make sure to complete the purchase process as soon as possible.

On the "Guest Management" screen of Kintone Administration, change the status of the guest user to Inactive.
Changing the status of guest users