if you want to cancel but are unable to follow the steps described in the "how to cancel page", contact adobe support.
there are 3 ways to contact adobe; chat, phone and twitter:
chat: use a browser that allows popups and cookies, and click here, https://helpx.adobe.com/contact.html?rghtup=autoOpen in the chat field (lower right), type AGENT be patient, it can take quite a while to reach a human.
p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post if it helps you get responses.
In case you are still unable to cancel the subscription with the help of the link, feel free to contact us via chat so that our support team can help you.
If you are not able to get to the chat window, then disable your adblockers, firewall, enable cookies/scripts on your browser. If it still fails then change your browser/machine/network.
Please do not share any personal/confidential information like email ID, bank details, etc here. This is a public forum.