I can't find the Adobe Stock plan subscription under My Plan page and cancel it. The video is useless if the plan didn't appear in My Plan paghe. My card was charged and I would like to cancel it asap!
You posted this in the wrong forum, has nothing to do with Captivate. I will try to move your question.
Self cancel: Cancel your Adobe Stock membership. If you are still in the 14-day window, you will be reimbursed.
If you can't self-cancel, contact Adobe customer care: Adobe customer care can be contacted by beginning a secure chat session at https://helpx.adobe.com/contact.html?rghtup=autoOpen. If the chat window fails to open, or is non-responsive, use a different device to start the interaction.
(see also here: https://community.adobe.com/t5/creative-cloud-services/how-to-contact-adobe-support/td-p/11875703 or here