Hi Markus,
Thanks for reaching out to the Stock team.
I did go through your account details and noticed that you have purchased Stock 10 images a month(one-year )plan on 19th February 2018. If you wish to cancel, I would suggest you to download the remaining assets prior to cancelling as you can use your available licenses as long as your subscription is active, but you forfeit any unused licenses upon cancellation of your subscription.
Also, the images once downloaded remains in your license history.
Additionally, I would like to let you know that if you cancel during the first-month billing cycle, your credit card will not be charged and your service will continue until the end of that first month’s billing cycle. If you cancel within 14 days after the beginning of the second month’s billing cycle, you’ll be fully refunded.
For more information please refer to Legal subscription terms | Adobe
Feel free to update this thread in case of any additional questions.
Regards
Twarita