[Plugin: Polylang] Flag link does not work

Hi,

I install this plugin on spacious and the point is that I did this before and it worked pretty well, but now I am building a new website and when I click on the portuguese flag (I have the english default one) it redirect me to a page that does not exist.

How I could edit the link?

Also in this theme the slider was appearing on both languages and now only in the english one.

Thanks in advance,
DG