Only allow for the countries in the $restricted_countries array

pmpro-restrict-countries.php

/**
 * Only sell to specific countries by adding in the 'allowed' countries' in 
 * the $restricted_countries array.
 * 
 * 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_init()
{
	global $restricted_countries;
	
	//Only allow for the countries in the $restricted_countries array
	$restricted_countries = array(
							1 => array('FR', 'IT'),
							2 => array('IT'),
	);
}

add_action('init', 'my_init');

function my_pmpro_registration_checks($value)
{
	global $restricted_countries, $pmpro_msg, $pmpro_msgt;
	
	$country = $_REQUEST['bcountry'];
	$level_id = $_REQUEST['level'];
	
	//only check if the level has restrictions
	if(!array_key_exists($level_id, $restricted_countries) && in_array($country, $restricted_countries[$level_id]))
	{
		$pmpro_msg = "Your country of residence is not permitted to register for this level.";
		$pmpro_msgt = "pmpro_error";
			
		$value = false;
	}
	
	return $value;
}
add_filter("pmpro_registration_checks", "my_pmpro_registration_checks");

function my_pmpro_level_expiration_text($text, $level)
{
	global $restricted_countries, $pmpro_countries;
	
	if(!array_key_exists($level->id, $restricted_countries ))
	{
		$text = $text." This level cannont be purchased if you reside in the following countries: ";
		
		//code for commas
		$i = 1;
		foreach($restricted_countries[$level->id] as $country)
		{
			$text = $text. $pmpro_countries[$country];
			
			if($i != count($restricted_countries[$level->id]))
				   $text = $text. ", ";
		
			$i++;
		}
		
	}
	
	return $text;
}
add_filter("pmpro_level_expiration_text", "my_pmpro_level_expiration_text", 10, 2);

I got this to work by changing the following.
line 31 should not start with ! and it should NOT be equal