I feel your pain, I spent all day on this, but I got it to work. I posted separately about it, maybe this will help you?
I ended up having to use “Image ID” instead of URL, but the code posted there is exactly what I’m using.
The only change would be to choose either true or false, for the image size code in the functions file, here:
add_image_size( 'homepage-thumb', 97, 83, true );
I have mine set to true so it doesn’t distort the image – check out this page in the WP docs, about “Crop Mode” :
Hope that helps!
Welcome to the Advanced Custom Fields community forum.
Browse through ideas, snippets of code, questions and answers between fellow ACF users
Helping others is a great way to earn karma, gain badges and help ACF development!
We've just released ACF 5.12.3 with a security fix to prevent arbitrary file uploads to forms with ACF fields.— Advanced Custom Fields (@wp_acf) July 14, 2022
Now that we've released this update, we recommend updating your sites as soon as possible.
© 2022 Advanced Custom Fields.