Hi Ernesto,
Unfortunately due to our privacy policies and dealing with school and child information we are prohibited from providing said access.
The only plugin I could think may be interfering would be the Pixel Your Site plugin which we use extensively for inputting custom JS & CSS into pages etc. Perhaps there is a conflict here?
Since updating to the latest version we have a new bug, we have 24 results per page as per our pagination, however, it is only pulling in 23 results per page.
Many thanks
Jason