Types files & content disappeared with 4.4 upgrade

The client could not resist clicking the upgrade to 4.4 button. ??

I inherited this site: https://everyneighborhood.org/, which seems to be mostly created with custom post types using Types.

After upgrading, most of the content has disappeared from the site, but more puzzling, when I logged in there was an error message at the top that the plugin Types had been deactivated due to missing files. I checked via FTP, and while the types directory was still there, the only folders remaining were “embedded” and “marketing”, and no files were left inside the types plugin directory.

So I downloaded the current version of Types, unzipped it, and overwrote all of the existing files in the plugin directory with the current version. When I try to activate it, I get a fatal error.

When I activate debug, this is the error message:
Fatal error: Call to undefined function types_render_field() in /nfs/c07/h03/mnt/172904/domains/everyneighborhood.org/html/wp-content/themes/enp_v1/template-slide.php on line 27

Later edit: Looks like it’s actually line 46 of wpcf.php that might be messed up? I don’t see a constants.php file…

require_once WPCF_INC_ABSPATH . '/constants.php';

What do I need to do to fix this?

Later, later edit: Rolling back to plugin version 1.8.10 gets my content back, but with CSS issues.

What info from me would be helpful in fixing what is broken in the plugin?

https://www.ads-software.com/plugins/types/