[WooCommerce Multilingual - Standalone Version] Stripe Payment gatewat not available in the second currency

Overview of the issue

If you are using WooCommerce Multilingual and its standalone mode with Stripe as your payment gateway, you may encounter issues when attempting to make payments in a secondary currency. Specifically, the Stripe payment gateway may not be available during checkout in the secondary currency if it is not set.

Workaround

Please, make sure of having a full backup of your site before proceeding.

• Open …/wp-content/plugins/woocommerce-multilingual/classes/multi-currency/payment-gateways/class-wcml-payment-gateway-stripe.php file.
• Look for line 78.
• Change:

  		if ( $gateway_settings && isset( $gateway_settings[ $client_currency ] ) ) {
  			$gateway_setting = $gateway_settings[ $client_currency ];
  			if ( isset( $gateway_setting['publishable_key'] ) && isset( $gateway_setting['secret_key'] ) ) {
  				$settings['publishable_key'] = $gateway_setting['publishable_key'];
  				$settings['secret_key']      = $gateway_setting['secret_key'];
  			}
  			if ( isset( $gateway_setting['test_publishable_key'] ) && isset( $gateway_setting['test_secret_key'] ) ) {
  				$settings['test_publishable_key'] = $gateway_setting['test_publishable_key'];
  				$settings['test_secret_key']      = $gateway_setting['test_secret_key'];
  			}
  		}
  

• For:

  		if ( $gateway_settings && isset( $gateway_settings[ $client_currency ] ) ) {
  			$gateway_setting = $gateway_settings[ $client_currency ];
  			if ( ! empty( $gateway_setting['publishable_key'] ) && ! empty( $gateway_setting['secret_key'] ) ) {
  				$settings['publishable_key'] = $gateway_setting['publishable_key'];
  				$settings['secret_key']      = $gateway_setting['secret_key'];
  			}
  			if ( ! empty( $gateway_setting['test_publishable_key'] ) && ! empty( $gateway_setting['test_secret_key'] ) ) {
  				$settings['test_publishable_key'] = $gateway_setting['test_publishable_key'];
  				$settings['test_secret_key']      = $gateway_setting['test_secret_key'];
  			}
  		}