Cloudflare Prestashop and Redsys Url error

Hi, we have Cloudflare Pro, Prestashop 8 and Redsys as a form of credit card payment. The order arrives fine, it is saved in the panel and the email arrives, but when paying an error page appears, as if the return url was wrong, how can we solve this? Due to this error we have had to pause Cloudflare, thank you beforehand.

URL Error:
https://filatelialopez.com/confirmacion-pedido?key=047c334eb723302207a2cc33dd9ff420&id_module=107&id_cart=21997&id_order=20166

Hi, I think I have to create some rule but I don’t know how to do it. At the moment we have paused Cloudflare since we cannot have broken urls in the payment methods, we would appreciate any help!