diff --git a/modules/ppcp-blocks/src/BlocksModule.php b/modules/ppcp-blocks/src/BlocksModule.php
index eb1ccc01b..2c38f9b5a 100644
--- a/modules/ppcp-blocks/src/BlocksModule.php
+++ b/modules/ppcp-blocks/src/BlocksModule.php
@@ -34,29 +34,49 @@ class BlocksModule implements ModuleInterface {
 	 * {@inheritDoc}
 	 */
 	public function run( ContainerInterface $c ): void {
-		if ( class_exists( 'Automattic\WooCommerce\Blocks\Payments\Integrations\AbstractPaymentMethodType' ) ) {
+		if (
+			! class_exists( 'Automattic\WooCommerce\Blocks\Payments\Integrations\AbstractPaymentMethodType' )
+			|| ! function_exists( 'woocommerce_store_api_register_payment_requirements' )
+		) {
 			add_action(
-				'woocommerce_blocks_payment_method_type_registration',
-				function( PaymentMethodRegistry $payment_method_registry ) use ( $c ): void {
-					$payment_method_registry->register( $c->get( 'blocks.method' ) );
+				'admin_notices',
+				function () {
+					printf(
+						'<div class="notice notice-error"><p>%1$s</p></div>',
+						wp_kses_post(
+							__(
+								'PayPal checkout block initialization failed, possibly old WooCommerce version or disabled WooCommerce Blocks plugin.',
+								'woocommerce-paypal-payments'
+							)
+						)
+					);
 				}
 			);
 
-			woocommerce_store_api_register_payment_requirements(
-				array(
-					'data_callback' => function() use ( $c ): array {
-						$smart_button = $c->get( 'button.smart-button' );
-						assert( $smart_button instanceof SmartButton );
-
-						if ( isset( $smart_button->script_data()['continuation'] ) ) {
-							return array( 'ppcp_continuation' );
-						}
-
-						return array();
-					},
-				)
-			);
+			return;
 		}
+
+		add_action(
+			'woocommerce_blocks_payment_method_type_registration',
+			function( PaymentMethodRegistry $payment_method_registry ) use ( $c ): void {
+				$payment_method_registry->register( $c->get( 'blocks.method' ) );
+			}
+		);
+
+		woocommerce_store_api_register_payment_requirements(
+			array(
+				'data_callback' => function() use ( $c ): array {
+					$smart_button = $c->get( 'button.smart-button' );
+					assert( $smart_button instanceof SmartButton );
+
+					if ( isset( $smart_button->script_data()['continuation'] ) ) {
+						return array( 'ppcp_continuation' );
+					}
+
+					return array();
+				},
+			)
+		);
 	}
 
 	/**