Hey there, @robby-barnes! Thanks for contacting us. I’m happy to help you.
I checked your website and was able to see the issue.
To confirm, this happened when you had PayPal standard and switching to the current plugin did not change anything, right?
You mentioned you disabled plugins related to Woo, so I believe you did not disabled all plugins but Woo, correct?
Can you please do it and check it the error persists while only Woo is active, and on a default theme (it can be Twenty Twenty-Four or Storefront).
Then please check if it persists with only Woo and Paypal active.
Please let us know how it goes.
Please also share the Fatal error logs (if any) under WooCommerce > Status > Logs. Then you can use the selector to search for Fatal Errors.
You could copy and paste your reply here or paste it via https://gist.github.com/ and send the link here.
Looking forward to your reply.
Have a wonderful day!
Hello carolM29,
Thanks very much for your reply.
I deactivated all plugins except for Woo and put the site on Twenty Twenty-four, but the problem persisted.
I activated PayPal Payments but the problem remained, although the PayPal button was visible.
The latest Fatal Error log is from August 1 (related to WP Rocket, not Woo). Not sure if this is relevant.
I saw a reference to a possible problem with WP Memory Limit ( https://woocommerce.com/document/increasing-the-wordpress-memory-limit/ ) but I don’t know haw to determine the limit being used for my site.
Just throwing this out in case it could be relevant.
I will appreciate any further help you can offer.
Robby
I was finally able to get in touch with a tech at my Web host, who fixed the problem from his end. Here is part of his explanation of the cause:
“From what I got on the error log, there are web application firewall rules blocking access when checking out items from the https://www.fifthestate.org/checkout/ page. On this case, I went ahead and disabled or whitelisted the said rules, to help prevent them from affecting the checkout page of the site.”
It would be interesting to know why these rules suddenly went into effect.