Here are what I found:
I can import your database and theme file into my localhost, with a fresh wordpress installation + the latest version of Toolset plugins + Woocommerce plugin.
I assume we are talking about post form "Create Land Seeker Listing" (ID 164), and problem page "Create a Land Seeker Listing" hidden link
Thanks. That is the correct form. This does checkout process sometimes work, but we're still receiving errors from our users that they end up at a blank page. When you're logged in as an admin it seems to work more often that for other user types, for some reason. Either way it's taking a long. The PHP errors we're getting are:
PHP Warning: Invalid argument supplied for foreach() in .../public_html/wp-content/plugins/cred-commerce/plugins/woocommerce/CRED_Woocommerce.php on line 219
and
PHP Warning: Error while sending QUERY packet. PID=53406 in .../public_html/wp-includes/wp-db.php on line 2007
Which one is the problem user?
Please provide the detail steps to duplicate the same problem.
And in your case, I suggest you edit the post form "Create Land Seeker Listing" (ID 164), in section "Toolset Forms Commerce", option "Checkout process", choose "Clear the cart and include only the selected product", and create a fresh user to test it again.
The problem is that most users, when they fill out the Create Land Seeker Listing form and press submit, are taken to a blank page instead of the checkout page. However, it sometimes works, and seems to usually work on devices that have created accounts before - perhaps because something is cached.
I changed the setting to "Clear the cart." We'll see if that helps.
I have test it again with your duplicator package in my localhost, it works fine.
Please update here if you still need assistance for it, and provide detail steps to duplicate the same problem, thanks