Hi @karnabal
The issue you had mostly occurred because you were trying to execute the get_field()/the_field() functions outside of The Loop. To fix it, you need to pass the post/page ID as the second parameter to the get_field() function like this:
get_field(‘custom_field_name’, 99)
Where “99” is the post/page ID where the custom field is assigned. This page should give you more idea about it: https://www.advancedcustomfields.com/resources/get_field/.
I hope this helps 🙂
