PayPal has advised that this issue has been resolved.
Posted Sep 15, 2022 - 23:33 UTC
Update
PayPal has identified the issue and is in the process of implementing a fix.
Posted Sep 15, 2022 - 22:39 UTC
Identified
Segpay has identified an intermittent issue affecting PayPal new sales. This issue has been escalated to PayPal and we will provide an update here once this issue has been resolved.