pmpro-remove-cancel-link-from-account-page-per-level.php

<?php
/**
 * Remove the "Cancel" membership action link from the account page.
 *
 * 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/
 */

function my_pmpro_remove_cancel_link_per_level( $pmpro_member_action_links ) {

	// For which levels should we remove the "Cancel" link?
	$levels = array( 1, 2, 3 ); // Level IDs go here

	// Get user's membership levels
	$user_levels = pmpro_getMembershipLevelsForUser();

	// Check level
	foreach ( $user_levels as $key => $level ) {
		if ( in_array( $level->id, $levels, false ) ) {
			unset( $pmpro_member_action_links['cancel'] );
		}
	}

	return $pmpro_member_action_links;

}
add_filter( 'pmpro_member_action_links', 'my_pmpro_remove_cancel_link_per_level', 10, 1 );