Hi there – I have the same technical issues as the op. I have installed woocommerce, event tickets plus and cannot see the tickets when I view pages built with advanced builder.
I have modified the template-builder.php file and tried to modify the enfold-child functions.php file but with no effect.

I think my child functions.php code is wrong.

I have my log in private attached. can you please have a look and let me know what is wrong? Thanks you in advance!