I have created a number of item banks in Quizzes.next with approximately 80 questions each. When I view the banks, I can see the first 40 or so questions, but when I click on the "2" at the bottom, the icon highlights, but I am still looking at the same questions.
I saw a discussion from last fall about the actual list of Item Banks won't let you view page 2 either so I'm guessing that it's an interface design issue.
I have submitted a ticket with support but wanted to get this on the group discussion page as well to create awareness and see if anyone has encountered and, hopefully, resolved the issue.
Just catching up on all outstanding questions here. I'm hoping by now you were able to get an answer to your question! Let us know if something is still amiss.