Hustle Pro SendinBlue Load More Lists button doesn't work

We are working with hustle pro.. we have made an slider -in which is using the email collection service. In this collection service we are using SendinBlue.
When we try to fetch lists from sendinblue we get a response, but not a updated list, some list items are missing because we have more than 10 lists. Then we try to use Load More Lists which results in a white screen.