Hi @bortolo
ACF will only save the data to the database when you save the object (in this case the users). When you set the default value on the field group editor, it won’t automatically change all of the old data you have as it can cause a performance issue.
Instead, you need to save the old object or set the default value in your code like this:
$subscribe = get_field('my-field', 'user_99');
if( !$subscribe ){
$subscribe == true
}
I hope this makes sense 🙂
