The link to cancel my subscription via recurring payment e-mails is broken

The link to cancel my subscription via recurring payment e-mails is broken. I want to cancel but it is impossible without help.

That is the 2nd method to cancel recurring subscriptions on Square. Have you tried canceling it within your Square dashboard by removing the customer? This should work. Please refer to method #1 Square Dashboard on the same guide https://www.jotform.com/help/559-How-do-I-work-with-Square-Subscription-and-cancel-it-in-JotForm

If there's still an issue, let us know.