Extending Ultimate Member Profile Menu using Hooks

gistfile1.php

/* First we need to extend main profile tabs */

add_filter('um_profile_tabs', 'add_custom_profile_tab', 1000 );
function add_custom_profile_tab( $tabs ) {

	$tabs['mycustomtab'] = array(
		'name' => 'My custom tab',
		'icon' => 'um-faicon-comments',
	);
		
	return $tabs;
		
}

/* Then we just have to add content to that tab using this action */

add_action('um_profile_content_mycustomtab_default', 'um_profile_content_mycustomtab_default');
function um_profile_content_mycustomtab_default( $args ) {
	echo 'Hello world!';
}

I just tried to add a shortcode in a custom tab with the following:

`add_filter('um_account_page_default_tabs_hook', 'add_kd_redeem_tab', 100 );
function add_kd_redeem_tab( $tabs ) {
$tabs[800]['redeem_kd_tab']['icon'] = 'um-icon-ios-world';
$tabs[800]['redeem_kd_tab']['title'] = 'Title';
$tabs[800]['redeem_kd_tab']['custom'] = true;
return $tabs;
}

add_action('um_account_tab__redeem_kd_tab', 'um_account_tab__redeem_kd_tab');
function um_account_tab__redeem_kd_tab( $info ) {
global $ultimatemember;
extract( $info );

$output = $ultimatemember->account->get_tab_output('redeem_kd_tab');
if ( $output ) { echo $output; }

}

add_filter('um_account_content_hook_redeem_kd_tab', 'um_account_content_hook_redeem_kd_tab');
function um_account_content_hook_redeem_kd_tab( $output ){
ob_start();
?>

<div class="um-field">
	
    <?php echo do_shortcode("[mycred_load_coupon label='Insert code here' button='Redeem']"); ?>
    		
</div>		
	
<?php
	
$output .= ob_get_contents();
ob_end_clean();
return $output;

}`

1. The shortcode displays correctly but when I hit the button I just get a page refresh instead of triggering the button generated by the shortcode
2. The shortcode works properly if put in the account page, outside tabs

The shortcode that I'm using is here:
https://codex.mycred.me/shortcodes/mycred_load_coupon/

What am I missing?
Thanks in advance!