Going to be honest, I don’t know why this is not running, because you are using
add_filter('acf/format_value', 'e1_format_all', 10, 3);
which should be run on every field that is formatted.
The only reason that I know of for the filter not to be called is if you use
get_field('field_name', false, false)
the 3rd argument tells ACF not to format the value, and in this case no formatting filters are run.
