Hello, @Corliss_aubert. Thanks for taking the time to post your message here in the PayPal Community Forum. I'm sorry for any difficulty caused by not being able to cancel the payment you mentioned. Here's what I can tell you.
It's possible to cancel a pending payment only if a "Cancel" link appears next to it in your Activity. The best approach to take when it's not possible to cancel a payment is to contact the merchant and arrange for a refund. For more information, please check out https://www.paypal.com/us/smarthelp/article/can-i-cancel-a-paypal-payment-faq637 and click on the link that says "request a refund."
I hope this is helpful. Thanks for being a part of the PayPal Community.
Sincerely,
Michael
PayPal_Michael
