1) my site doesn't show data

Link website : https://beta.vietmro.com/test03/

User : webmaster 

Pass : Bachlien123

Link Plugin Editor : https://beta.vietmro.com/test03/wp-admin/plugin-editor.php?file=b2bking%2Fincludes%2Fclass-b2bking.php&plugin=b2bking%2Fb2bking.php

Link File funtions : https://beta.vietmro.com/test03/wp-admin/theme-editor.php?file=functions.php&theme=woodmart-child

But, my site doesn't show data  https://beta.vietmro.com/test03/my-account/conversation/?id=10971:  

2) I want to code show list field in filter  b2bking_quote_message_before_items