Quick: Looking for help with Wordpress "WP All Import Pro" and "Custom Fields"

Hi, I am looking for a developer to help me with setting up "WP All Import Pro" to work correctly with "Custom Fields". The plugin let's me import the CSV file and creates the post, but upon loading the page a blank page returns. I suspect it to be due to a setting or value from "Custom Fields".

Please, only apply if you've got either experience in troubleshooting cases like these or experience with Wordpress Plugins. First come first serve.