Problem with ACF on enfold editor

Hello Please help,

I’ve added this code to display custom field input for pdf file download on page layout.
this >> (i add this to enfold/includes/loop-page.php after line 31)

if( have_rows('upload_pdf_file') )
				{
				echo '<table border="0" cellpadding="10" cellspacing="0">';
				while( have_rows('upload_pdf_file') ): the_row();
				// vars
				$file = get_sub_field('pdf_file');	
				$pdfcap = get_sub_field('pdf_title');
				$url = $file['url'];
				$title = $file['title'];
				$caption = $file['caption'];
				
				echo '<tr class="pdfbutton"><td width="70%">';
				echo '<span>'.$pdfcap.'</span></td>';
					if( $url )
					{
					echo '<td align="center"><a href="'.$url.'" title="'.$title.'" target="_blank">';
					}
					echo 'Download PDF';
					if( $url )
					{
						echo '</a>';
					}
					echo '</td></tr>';
					endwhile;
					echo '</table>';
				}

but it able to show only some page and some page just disappear even I put content to acf via backend already.
please help, I need this code above to show on every page.

Thanks so much!