Portfolio Creates Extra Page and Doesn't Show Published Item

Hi,

I have two issues currently with the portfolio.

– The first one is that it creates a second page for all my categories, even though it’s not justified, and so when you click on 2, it shows page not found. (see pic)

– the second one is that it doesn’t show all the items I publish that it used to show. They are still published but somehow, it doesn’t show them anymore. Is there a limit to the number of items you can add to portfolio? (and why would it select randomly what to take out. There are at list 5 items not showing currently)

Thanks in advance for your help
Nathalie