wordpress integration - unable to send content to my SDL Project

I've integrated my site with the WPML plugin. along with the SDL tms. But I am unable to send the files to my SDL project. I get this message when I send files for translation. but I don't see anything in my SDL project.



and when I check the status here Batch delivery status page - https://tp.wpml.org/projects/20906/external. it loads forever. have been trying to find a fix for the couple of weeks now.