Os Property Category Module

Hello,

I have more than six categories that need to be displayed in the Os Property Category Module. In the module configuration I have already chosen to display 8 properties in 2 columns, that would be four per row, but for some reason the module displays 3, 1, 3, 1, and not 4 and 4. I appreciate your help to know how I can make the module display the 8 categories in two rows of 4 categories each. Thanks a lot.