Hi olopolo11, I’ve done some more digging.
This isn’t a fault with the Plugin, well it is as we’re submitting a lot of POST fields at once but not something that can be easily addressed as all FORM fields on that Field Section (e.g. Billing, Shipping, Additional) are processed at once when you click Save Changes.
When you click Save Changes and have 25+ Checkout fields on a given Section all 1000+ POST fields are submitted to the server, some hosts have a limit of 1000 POST fields. Any more than 1000 POST fields are disregarded.
By increasing the ‘max_input_vars’ PHP option you can save more than 25+ Checkout fields per Section. You can apply this change across all your WordPress sites by editing the ‘max_input_vars’ PHP option in php.ini, or if allowed on a per-site basis by adding the following to your .htaccess file.
php_value max_input_vars 2500
I’ll add this to the Documentation section here:
https://www.visser.com.au/documentation/woocommerce-checkout-manager/troubleshooting/
Here’s some screenshots showing this resolved, previously I could add ~27 Checkout fields ??
https://www.visser.com.au/wp-content/uploads/2016/05/screenshot-wooccm-billing.jpg
https://www.visser.com.au/wp-content/uploads/2016/05/screenshot-wooccm-shipping.jpg