The free trial need not be canceled as it will expire after 7 days and you won't be charged for the same.
If there is something else which you are referring to please let me know.
You may also Contact Customer Care for more details.
Hi U. U.,
I've check the Adobe ID you use on the forums and see no Adobe Stock subscription associated with this Adobe ID. If you would like to sign up for the first month free offer and receive the use of 10 free image licenses you can do so on Stock photos, royalty-free images, graphics, vectors & videos | Adobe Stock Please note that you will be charged if you do not cancel before the 30 day trial ends.