Update gateway ID

src/Features/RemotePaymentMethods/DefaultPaymentGateways.php

@@ -74,7 +74,7 @@ public static function get_all() {
  ),
  ),
  array(
- 'key' => 'mercadopago',
+ 'key' => 'woo-mercado-pago-custom',
  'title' => __( 'Mercado Pago Checkout Pro & Custom', 'woocommerce-admin' ),
  'content' => __( 'Accept credit and debit cards, offline (cash or bank transfer) and logged-in payments with money in Mercado Pago. Safe and secure payments with the leading payment processor in LATAM.', 'woocommerce-admin' ),
  'image' => plugins_url( 'images/onboarding/mercadopago.png', WC_ADMIN_PLUGIN_FILE ),