Next page buttons not working

Good afternoon,

When I clik the Next button, Last button, or any number at the bottom of my first page on the workbooks or groups sessions, it shows me the error "no workbooks" and "There's no group yet". It's supposed to show me the other groups or workbooks, but I don't have access to them.
 

I have 3 accounts with you, they're all linked to the same school, and the issue is going on no matter what account I use.

The problem has been going on for over 3 weeks. I attatched one picture on "my workbook" session, however, it also happens in "My students" session. Since it doesn't allow me to upload more than one image, I wasn't able to show you the error it gives me after I click Next. But it says "No workbooks", and there are a lot of more workbooks