Field has disappeared on post page

Hi!

I have taken over a site from someone.
He has a list if businesses on the site, each one has a URL, saved as a field:

$iframe_url = get_field(‘manufacturer_url’);

It seems he used to manage this URL on a post-type page, but the actual field to edit the URL has disappeared – maybe in some recent wordpress update.

I have made sure on the edit page, all the elements are checked off on the ‘screen options’ tab. But i still canot see where this field is, where i can change the URL. Any ideas?

Thank you!

• This topic was modified 4 years, 3 months ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Everything else WordPress topic