Hi Sean,
Thanks for reaching out the Adobe Stock community.
I have checked your account details and noticed that you had an Adobe Stock subscription- 10 images per month(one-year) plan on 23rd January 2017. The subscription has been cancelled. You can use your available licenses as long as your subscription is active, but you forfeit any unused licenses upon cancellation of your subscription. for more information, please refer to Common Questions about plans, purchasing, and availability, Adobe Stock
Also, the free standard images which were allocated to your account on 9/26/2017 expired on 9/26/2018 since
the licenses of Adobe Stock are valid for one year from the date they were added to the customer's account and that is the reason you are unable to access your remaining assets.
However, the assets which are downloaded already will always remain in your license history.
Feel free to update this thread in case of any additional questions.
Regards,
Twarita