Get translated category id?

You have to use pll_get_term instead.

I have the same problem, I need to echo the name of a category outside the loop, wich I solved using get_the_category_by_id, but how do I make Polylang translate it once you switch the language?

I understand you can use pll_get_term to get the id of the category for other languages. But, how do I echo the category title?

Thank you.

Does it not work?

echo get_the_category_by_id(pll_get_term(20));

Perfect!, that did the trick, thanks a lot.