This recipe remove the default code that adds the sponsor area to membership account page ( forked and adapted to v3.1 UI )

my-sponsor-area-account-pages.php

<?php

/**
 * This recipe remove the default code that addes the sponsor area to membership account page
 *  Needed when using WPML
 *
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */

remove_filter( "the_content", "pmprosm_the_content_account_page", 30 );

function my_pmprosm_the_content_account_page( $content ) {
	global $post, $pmpro_pages, $current_user, $wpdb;

	//Bail if not the account page or user is admin
	if(  is_admin() || ! is_page( $pmpro_pages['account'] ) ) {
		return $content;
	}

	// Get the code ID for the current user.
	$code_id = pmprosm_getCodeByUserID( $current_user->ID );


	if ( isset( $current_user->membership_level->ID ) ) {
		$pmprosm_values = pmprosm_getValuesByMainLevel( $current_user->membership_level->ID );
	} else {
		$pmprosm_values = '';
	}

	// Bail if no code ID or no values.
	if( empty( $code_id ) || empty( $pmprosm_values )  ) {
		return $content;
	}

	$code = pmprosm_getDiscountCodeByCodeID( $code_id );


	if( ! is_array( $pmprosm_values['sponsored_level_id'] ) ) {
		$sponsored_level_ids = array($pmprosm_values['sponsored_level_id']);
	} else {
		$sponsored_level_ids = $pmprosm_values['sponsored_level_id'];
	}


	// No sponsored levels to use codes for.
	if( empty( $sponsored_level_ids ) || empty( $sponsored_level_ids[0] ) ) {
		return $content;
	}


	$code_urls = pmprosm_get_checkout_urls( $code );


	ob_start();


	$limit = 1;
	if( isset( $pmprosm_values['max_seats'] ) ) {
		$limit = $pmprosm_values['max_seats'];
	}


	// Removing a sponsored member?
	if( isset( $_REQUEST['pmprosm_remove_member_id'] ) && isset( $_REQUEST['pmprosm_remove_member_level'] ) ) {
		// Check nonce.
		if( wp_verify_nonce( $_REQUEST['_wpnonce'], 'pmprosm_remove_member' ) ) {
			// Nonce is good. Remove the member.
			$removed = pmprosm_remove_member_from_seat( intval( $_REQUEST['pmprosm_remove_member_id'] ), intval( $_REQUEST['pmprosm_remove_member_level'] ), $current_user->ID );
			
			if ( $removed !== false ) {
				$member = get_userdata( intval( $_REQUEST['pmprosm_remove_member_id'] ) );
				$removed_message = sprintf( __( 'Sponsored User: %s was removed. (Membership Level: %s)', 'pmpro-sponsored-members' ), $member->display_name, intval( $_REQUEST['pmprosm_remove_member_level'] ) );
			}
		}
	}


	// Get members.
	$member_ids = pmprosm_getChildren($current_user->ID);
	?>
	<div id="pmpro_account-sponsored" class="pmpro_card">

		<h3 class="pmpro_card_title" ><?php esc_html_e( "Sponsored Seats", "pmpro-sponsored-members" );?></h3>
		<div class="pmpro_card_content">
		<?php if (empty($pmprosm_values['hide_display_discount_code']) || $pmprosm_values['hide_display_discount_code'] === false ) { ?>
			<p><?php printf(esc_html__("Give this code to your sponsored members to use at checkout: %s", "pmpro-sponsored-members"), '<strong>' . $code->code . '</strong>');?></p>
			<?php if(count($code_urls) > 1) { ?>
				<p><?php esc_html_e("Or provide one of these direct links to register:", "pmpro-sponsored-members");?></p>
			<?php } else { ?>
				<p><?php esc_html_e("Or provide this direct link to register:", "pmpro-sponsored-members");?></p>
			<?php } ?>


			<ul>
				<?php foreach($code_urls as $code_url) { ?>
					<li><?php echo esc_html( $code_url['name'] );?>: <strong><a target="_blank" href="<?php echo esc_url( $code_url['url'] );?>"><?php echo esc_url(  $code_url['url'] );?></a></strong></li>
				<?php } ?>
			</ul>
		<?php } // hide_display_discount_code ?>

			<?php if(empty($code->uses)) { ?>
				<?php esc_html_e( "This code has unlimited uses.", "pmpro-sponsored-members" );?>
			<?php } else { ?>
				<?php printf( esc_html__("%s/%s uses.", "pmpro-sponsored-members" ), count( $member_ids ), $code->uses );?>
			<?php } ?>
		</div>
		<?php
			// Did we remove a child earlier?
			if ( ! empty( $removed_message ) ) {
			?>
			<div class="pmpro_message pmpro_success"><?php echo esc_html( $removed_message ); ?></div>
			<?php
			}
			
			// use same account display as in admin
			if ( ! empty( $member_ids ) ) {
				echo "<hr />";
				echo my_pmprosm_display_sponsored_accounts( $member_ids );
			}
		?>
	</div> <!-- end pmpro_account-sponsored -->
	<?php

	$temp_content = ob_get_contents();
	ob_end_clean();

	$content = str_replace( '<!-- end pmpro_account-profile -->', '<!-- end pmpro_account-profile -->' . $temp_content, $content );


	return $content;
}
add_filter( "the_content", "my_pmprosm_the_content_account_page", 30 );


function my_pmprosm_display_sponsored_accounts( $member_ids ) {
   global $current_user;
   
   // Make sure we have something to display.
   if ( empty( $member_ids) ) {
	   return '';
   }
   
   // Display sponsored members.
   $count = 0;
   ob_start();
   ?>
	<div class="pmpro_card_content">
		<h4><?php esc_html_e( "Sponsored Members", "pmpro-sponsored-members" );?></h2>
		<div class="pmpro-sponsored-members_children" <?php if( count( $member_ids ) > 4 ) { ?>style="height: 150px; overflow: auto;"<?php } ?>>
			<table class="wp-list-table widefat striped" width="100%" cellpadding="0" cellspacing="0" border="0">
				<thead>
				<tr>
					<th><?php esc_html_e( 'Date', 'pmpro-sponsored-members' ); ?></th>
					<th><?php esc_html_e( 'Name', 'pmpro-sponsored-members' ); ?></th>
					<th><?php esc_html_e( 'Email', 'pmpro-sponsored-members' ); ?></th>
					<th><?php esc_html_e( 'Level', 'pmpro-sponsored-members' ); ?></th>
					<th></th>
				</tr>
				</thead>
				<tbody>
				<?php
				foreach($member_ids as $member_id)
				{
					$member = get_userdata($member_id);
					if(empty($member)) {
						continue;
					}
					$member->membership_level = pmpro_getMembershipLevelForUser($member_id);
					
					// Figure out URL based on where we are.
					if ( $_SERVER['SCRIPT_NAME'] == '/wp-admin/user-edit.php' ) {
						// Editing another user in the admin.
						$qargs = array(
							'user_id' => intval($_REQUEST['user_id']),
							'pmprosm_remove_member_id' => $member->ID,
							'pmprosm_remove_member_level' => $member->membership_level->id
						);
						$remove_url = add_query_arg( $qargs, admin_url('user-edit.php') );
					} elseif ( $_SERVER['SCRIPT_NAME'] == '/wp-admin/profile.php' ) {
						// Editing yourself on profile.php
						$qargs = array(
							'pmprosm_remove_member_id' => $member->ID,
							'pmprosm_remove_member_level' => $member->membership_level->id
						);
						$remove_url = add_query_arg( $qargs, admin_url('profile.php') );
					} else {
						// Assume frontend account page.
						$qargs = array(
							'user_id' => $current_user->ID,
							'pmprosm_remove_member_id' => $member->ID,
							'pmprosm_remove_member_level' => $member->membership_level->id
						);
						$remove_url = add_query_arg( $qargs, pmpro_url('account') );
					}
					$remove_url = wp_nonce_url( $remove_url, 'pmprosm_remove_member' );
					?>
					<tr<?php if($count++ % 2 == 1) { ?> class="alternate"<?php } ?>>
						<td><?php echo date(get_option("date_format"), $member->membership_level->startdate); ?></td>
						<td><?php echo esc_html( $member->display_name ); ?></td>
						<td>
							<?php if ( current_user_can( 'edit_users' ) ) { ?>
								<a href="<?php echo get_edit_user_link($member_id); ?>"><?php echo esc_html( $member->user_email ); ?></a>
							<?php } else { ?>
								<?php echo esc_html( $member->user_email ); ?>
							<?php } ?>
						</td>
						<td><?php echo esc_html( $member->membership_level->name ); ?></td>
						<td>
							<?php
							$delete_text = esc_attr__('Are you sure you want to remove this member?', 'pmpro-sponsored-members' );
							?>
							<a href="<?php echo $remove_url; ?>" onclick="<?php echo esc_js('return confirm("' . $delete_text . '");'); ?>"><?php _e( 'Remove', 'pmpro-sponsored-members'); ?></a>
						</td>
					</tr>
					<?php
				}
				?>
				</tbody>
			</table>
		</div>
	</div>
   <?php
   $content = ob_get_contents();
   ob_end_clean();
   return $content;
}