no need to send me a link.
i can see this from your paypal address.
i also tried to reproduce this now on your site and i get the same error (i.e 229 at checkout , but only 228 when paying at paypal)

i will see if i can reproduce this here somehow….

will get back to you when i know

oh, and of your delivery charges settings too please (especially the charges and the discount section)

thanks

ok, i can reproduce this , and yes, it’s a rounding error when not displaying decimals.
i will have to look a bit in more detail as to where exactly this error occurs.

in the meantime , do the following:
in wppizza-gateway-paypal.php at approx line 682 you will find the following:

// 4 - Make sure the amount(s) paid match
if ((string)$gatewayReply['mc_gross'] != (string)$orderDetails['total']) {
$errmsg .= __("mc_gross does not match: ",'wppizza-gateway-paypal');
$errmsg .= $orderDetails['total']." | ".$orderDetails['total']."\n";
}

just delete or comment out the whole things.
it makes it very slightly more insecure, but the chances of anything being tampered there by anyone are absolutely minute.

generally , it’s an issue in the main plugin and not in the paypal gateway, so the above is a workaround until i managed to fix it in the next update of wppizza

hope that helps for now