Links to the same page

Hi,

Thanks for the time reading this topic.

At my personal website I’ve these links:

https://blog.paulobrito.pt/o-album-negro-de-hanif-kureishi
and
https://blog.paulobrito.pt/carbono-alterado-de-richard-morgan (but when I click on it, it goes to https://blog.paulobrito.pt/o-album-negro-de-hanif-kureishi)

The same happens with:
https://blog.paulobrito.pt/aquisicoes-5-2
and
https://blog.paulobrito.pt/aquisicoes-5-1 (but when I click on it, it goes to https://blog.paulobrito.pt/aquisicoes-5-2)

I can’t find why. If I use the default links all works normal.

Thanks for any help.