Hello @chrisf1988
Thank you for reaching out to us, we are aware of this situation. However, the issue is not caused by our plugin, but on the PayPal servers. PayPal already confirmed this outage on their status page.
If you want to avoid your customer encountering this issue, you can disable the card payment option by going to the PayPal Payments settings page and find the option “Hide Funding Source(s)” under the tab “Standard Payments”. Here, you can add “Credit & debit cards” to hide the payment function until they resolved this issue.
Another option is to activate the Advanced Card Processing payment method, which would replace the Standard Card Processing option and avoid this issue from occurring. This payment method is however not available in all countries. On this page, you can find out if you are eligible for this payment method.
If you are looking for more details or join a discussion on this, I advise you to look here. Since there is nothing we (the plugin developer) can do to fix this, I will mark this thread as resolved.
Kind regards,
Joost