Unable to connect

Getting this error when trying to sync with a Magento 1.9.1.0 store:

Fatal error: Uncaught SoapFault exception: [Client] Function (“call”) is not a valid method for this service in G:\Repos\site\wp-content\plugins\mage-wp-sync\lib\sync_customers_from_magento.php:22 Stack trace: #0 G:\Repos\site\wp-content\plugins\mage-wp-sync\lib\sync_customers_from_magento.php(22): SoapClient->__call(‘call’, Array) #1 G:\Repos\site\wp-content\plugins\mage-wp-sync\lib\sync_customers_from_magento.php(22): SoapClient->call(‘62090f0d99d3346…’, ‘customer.list’) #2 G:\Repos\site\wp-content\plugins\mage-wp-sync\lib\sync_customers_from_magento.php(158): TransferCustomers::transferring_customers() #3 G:\Repos\site\wp-content\plugins\mage-wp-sync\includes\TransferData.php(15): require_once(‘G:\\Repos\\site…’) #4 [internal function]: transferdata_from_magento(”) #5 G:\Repos\site\wp-includes\plugin.php(496): call_user_func_array(‘transferdata_fr…’, Array) #6 G:\Repos\site\wp-admin\admin-ajax.php(86): do_action(‘wp_ajax_transfe…’) #7 {main} thrown in G:\Repos\site\wp-content\plugins\mage-wp-sync\lib\sync_customers_from_magento.php on line 22

https://wordpress.org/plugins/mage-wp-sync/