@ Omer
I installed the Query Monitor plugin and it shows several errors, one related to Connections.
The database is reporting this error:
Out of sort memory, consider increasing server sort buffer size
This is a very odd error, never seen it before. This seems to be a webhost configuration issue. Perhaps they can increase the sort buffer size for you???
Now, interestingly, a more complex query is run in the admin and it works just fine. To make it more interesting, if I use [connections category=2], the directory displays just fine which is odd because that creates a more complex query.
Anyway, I suggest asking the host if they can increase the buffer size for you.
Hope this helps, let me know.
ps. I left Query Monitor installed for you to see the error.
