I have a problem with the fields “checkbox” because they are saved as an array, is there any way to make a “checkbox” field that is saved as list of options? (For example: option1, option3, option4)
I have tried to do with the custom field but it will not be done, could they help me?
No, ACF expects checkbox fields to be saved as an array in the DB. Why do you need the format changed, maybe there is some other solution.