Genres and Album pages showing just 1 item when first load

Hi, I can′t find why this pages are loading just one item like in this image: https://mega.nz/#!kgITiDDC!xSv-yHcvTV0eTCQvex2zeeZVN_MF_e7lYGXdrQUKqdE and not for example like this one: https://mega.nz/#!s0xCGSwI!KUDt8PPCRokppXFKpRhwJJrZsLQWMKLRZNZHKf3OL04 that loads several items in one view.

Website is under maintenance mode, so is not possible to access this pages right now without accessing the admin area.

Thanks in advance for any help given.

The page I need help with: [log in to see the link]