PayPal Instant Payment Notification Warning

[split63]

Zen: 1.5.7c
PHP 5.6

We are using PayPal express. Over the last 3 days May 7 2022 - May 10 2022, we get the email from PayPal warning:
"PayPal Instant Payment Notification Warning"

We have made no changes.
Dr. Byte has a good discussion here: https://www.zen-cart.com/showthread....25#post1285925

However, orders appear to be coming in with no problems. No errors in the logs
Is this a PayPal issue? Is anyone else experiencing this?

[dbltoe]

Same as your other post on PayPal.

Try the update..

[split63]

Same as your other post on PayPal.

Try the update..

I will try the update