Hi uhtcoh,
Thanks for provided link.
You do not have issue with reCaptcha field error message. You have issue with global form validation for all required fields.
We retest our plugin for Vintage theme (free and pro versions) with installed SiteOrign PageBuilder plugin – everything is working.
So, issue possible be related to other plugins that installed on your site, however we are not able to check it form our side.
As quick test, you can turn on WordPress debug mode (https://codex.www.ads-software.com/Debugging_in_WordPress, add to wp-config.php -> define(‘WP_DEBUG’, true);) and check for global error messages.
If you won’t find errors, you will need to deactivate all plugins except contact form – and send test message or submit empty form – if error messages will be displayed (depend on validation type in the plugin settings) then issue related to some plugin.
Then you will need to activate plugins one-by-one and test form submit (you can use submission for empty form). It allows to find plugin that possible has conflict with our plugin.
However, if you will decide to make described above, please backup your site just in case.
Please let us know if this information will help you or you will find some additional information about the issue.