More than 3 categories with differentes themes

[japarra]

Hi! I have 14 categories at my topsite, and i made a differente theme for each one. But when i ´ve tried to put the categories in each theme, I can only put differents themes at 3 categories(any,but only 3). The other 11 only accept the default them. Anyone have the same problem than me?¿anyone know how to solve my problem? help me plsss