MW WP Formでdatepickerが動作しない

前提・実現したいこと

WordpressのMW WP Formでdatepickerを動作させたい

起こっていること

datepicker 動かないで検索して出てくることはあらかた試して
以下のように読み込ませることで、開発ツールを用いてもconsoleにエラーが吐き出されず、カレンダーも表示されずテキストでの入力しかできず困っております。

header.phpに以下の記述

php
1　　　　　　　　　　<link rel="stylesheet" href="<?php echo get_template_directory_uri(); ?>/styles/vendors/reset.css" />
2    　　<link rel="stylesheet" href="<?php echo get_template_directory_uri(); ?>/styles/vendors/slick-theme.css" />
3    　　<link rel="stylesheet" href="<?php echo get_template_directory_uri(); ?>/styles/vendors/slick.css" />
4    　　<link rel="stylesheet" href="<?php echo get_template_directory_uri(); ?>/styles/vendors/jquery-ui.css">
5    　　<link rel="stylesheet" href="<?php echo get_template_directory_uri(); ?>/style.css">
6    <?php wp_head(); ?>
7    <?php wp_deregister_script('jquery'); ?>
8    <script src="<?php echo get_template_directory_uri(); ?>/scripts/vendors/jquery-3.4.1.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
9  </head>

footer.phpに以下の記述

php
1</html>
2<?php wp_footer(); ?>
3
4<script src="<?php echo get_template_directory_uri(); ?>/scripts/vendors/jquery-ui.min.js"  integrity="sha256-VazP97ZCwtekAsvgPBSUwPFKdrwD3unUfSGVYrahUqU=" crossorigin="anonymous"></script>

開発ツールでの表示

html
1<input type="text" name="date_1" class="input date hasDatepicker" size="30" value="2021年1月1日" id="dp1639988722721">
2<script type="text/javascript">
3jQuery(function($) {
4	$("input[name='date_1']").datepicker({
5		"yearSuffix":"\u5e74","dateFormat":"yy\u5e74mm\u6708dd\u65e5","dayNames":["\u65e5\u66dc\u65e5","\u6708\u66dc\u65e5","\u706b\u66dc\u65e5","\u6c34\u66dc\u65e5","\u6728\u66dc\u65e5","\u91d1\u66dc\u65e5","\u571f\u66dc\u65e5"],"dayNamesMin":["\u65e5","\u6708","\u706b","\u6c34","\u6728","\u91d1","\u571f"],"dayNamesShort":["\u65e5\u66dc","\u6708\u66dc","\u706b\u66dc","\u6c34\u66dc","\u6728\u66dc","\u91d1\u66dc","\u571f\u66dc"],"monthNames":["1\u6708","2\u6708","3\u6708","4\u6708","5\u6708","6\u6708","7\u6708","8\u6708","9\u6708","10\u6708","11\u6708","12\u6708"],"monthNamesShort":["1\u6708","2\u6708","3\u6708","4\u6708","5\u6708","6\u6708","7\u6708","8\u6708","9\u6708","10\u6708","11\u6708","12\u6708"],"showMonthAfterYear":"true","changeYear":"true","changeMonth":"true"	});
6});
7</script>

また、header.phpのjquery読み込み部分を、消してfooter.phpのwp_footer直後に記載したバージョンを試すと以下のエラーを確認することができます。

(index):188 Uncaught ReferenceError: jQuery is not defined

jQuery(function($) {
	$("input[name='date_1']").datepicker({
		"yearSuffix":"\u5e74","dateFormat":"yy\u5e74mm\u6708dd\u65e5","dayNames":["\u65e5\u66dc\u65e5","\u6708\u66dc\u65e5","\u706b\u66dc\u65e5","\u6c34\u66dc\u65e5","\u6728\u66dc\u65e5","\u91d1\u66dc\u65e5","\u571f\u66dc\u65e5"],"dayNamesMin":["\u65e5","\u6708","\u706b","\u6c34","\u6728","\u91d1","\u571f"],"dayNamesShort":["\u65e5\u66dc","\u6708\u66dc","\u706b\u66dc","\u6c34\u66dc","\u6728\u66dc","\u91d1\u66dc","\u571f\u66dc"],"monthNames":["1\u6708","2\u6708","3\u6708","4\u6708","5\u6708","6\u6708","7\u6708","8\u6708","9\u6708","10\u6708","11\u6708","12\u6708"],"monthNamesShort":["1\u6708","2\u6708","3\u6708","4\u6708","5\u6708","6\u6708","7\u6708","8\u6708","9\u6708","10\u6708","11\u6708","12\u6708"],"showMonthAfterYear":"true","changeYear":"true","changeMonth":"true"	});
});
</script>

scripts.js?ver=5.8.2:2

(anonymous) @ scripts.js?ver=5.8.2:2

html
1<script type="text/javascript">
2jQuery(function($) {
3	$("input[name='date_1']").datepicker({
4		"yearSuffix":"\u5e74","dateFormat":"yy\u5e74mm\u6708dd\u65e5","dayNames":["\u65e5\u66dc\u65e5","\u6708\u66dc\u65e5","\u706b\u66dc\u65e5","\u6c34\u66dc\u65e5","\u6728\u66dc\u65e5","\u91d1\u66dc\u65e5","\u571f\u66dc\u65e5"],"dayNamesMin":["\u65e5","\u6708","\u706b","\u6c34","\u6728","\u91d1","\u571f"],"dayNamesShort":["\u65e5\u66dc","\u6708\u66dc","\u706b\u66dc","\u6c34\u66dc","\u6728\u66dc","\u91d1\u66dc","\u571f\u66dc"],"monthNames":["1\u6708","2\u6708","3\u6708","4\u6708","5\u6708","6\u6708","7\u6708","8\u6708","9\u6708","10\u6708","11\u6708","12\u6708"],"monthNamesShort":["1\u6708","2\u6708","3\u6708","4\u6708","5\u6708","6\u6708","7\u6708","8\u6708","9\u6708","10\u6708","11\u6708","12\u6708"],"showMonthAfterYear":"true","changeYear":"true","changeMonth":"true"	});
5});
6</script>