[SOLVED] Problems with WP-PageNavi and Atahualpa 3.5.3.

I need help, use Atahualpa 3.5.3 with WP-PageNavi Version 2.74, but does not work.

Into (Add HTML / CSS Insert) do not enter anything.
In file footer.php insert:
<?php if(function_exists('wp_pagenavi')) { wp_pagenavi(); } ?>

I tested another plugin: WP Page Numbers, Version 0.5.
In file footer.php insert:
<?php if(function_exists('wp_page_numbers')) : wp_page_numbers(); endif;
echo "<p><br />";
?>

But it does not show page numbers.

Important to know: I uninstalled and reinstalled WP-PageNavi.

What happened? Something went wrong because the uninstall WP-PageNavi, what should I do?
I have another site with Atahualpa 3.5.3 and WP-PageNavi Version 2.74 working, what happened?

I await contact

Thank you and congratulations for the beautiful theme.