The category option isn’t working on the free version meaning we can only use one FAQ page. Is this the same for the paid version?

I don’t understand what you mean by ‘one FAQ page’. Could you please elaborate on what you want to create with the FAQ plugin by coming through our contact form – https://helpiewp.com/contact/ or through support tickets – https://helpiewp.com/support/

Also, I would like to tell you that some features related to Category Options are done and will be released in the next version.