Hi Steph,
Thanks for reaching out to the Adobe Stock community.
In addition to Brad's above post, I would also like to let you know that if you download all the licenses/assets prior to cancelling your Adobe Stock subscription, it will always remain in your license history.
You can use your available licenses as long as your subscription is active, but you forfeit any unused licenses upon cancellation of your subscription.
You may also refer to Common Questions about plans, purchasing, and availability, Adobe Stock for more details.
Hope this information helps!
Feel free to update this thread in case of any additional questions.
Regards,
Twarita