The date format interface in picker does not work.

@freezhao

Have you tried with this date format Y-m-d

https://www.php.net/manual/en/datetime.format.php

• This reply was modified 3 years, 6 months ago by missveronica.
• This reply was modified 3 years, 6 months ago by missveronica.

@freezhao

Yes you are right, this is a JavaScript format for the meta_key birth_date in edit mode.
You can try this code snippet to force the JavaScript to use the PHP format Y-m-d
For other fields change birth_date to the desired meta_key name in the code snippet.

add_filter( "um_get_field__birth_date", 'um_get_field__birth_date_custom', 10, 1 );

function um_get_field__birth_date_custom( $array ) {

    if( isset( $array['js_format'])) {
        $array['js_format'] = 'yyyy-mm-dd';
    }

    return $array;
}

Install the code snippet into your active theme’s functions.php file
or use the “Code Snippets” plugin.

https://ww.wp.xz.cn/plugins/code-snippets/

• This reply was modified 3 years, 6 months ago by missveronica.

@freezhao

Yes, this should work for your customized date field.

I have posted an UM bug report about this YMD date issue.

https://github.com/ultimatemember/ultimatemember/issues/1096