Facing problems creating a presentation portfolio

Hello!

I’ve been having some problems with my portfolio.

I need a slide presentation portfolio, so I updloaded individual posts in the slide presentation format for each presentation. But whenever I post it, I try to see my post and it shows as not found?
Other problem that I have, is that in my portfolio page it only shows the first slide, not showing the other ones, and not in automatic reproduction as I set it.

Could you please help me with that??
Thank you!

The page I need help with: [log in to see the link]