private function handle_deactivations() {

		$obfuscated_keys = llms_filter_input( INPUT_POST, 'llms_remove_keys', FILTER_UNSAFE_RAW, FILTER_REQUIRE_ARRAY );
		$keys            = array();

		// De-obfuscate the keys before sending to deactivation server or removing from the site.
		$my_keys = llms_helper_options()->get_license_keys();
		foreach ( $my_keys as $key ) {
			foreach ( $obfuscated_keys as $obfuscated_key ) {
				if ( llms_obfuscate_license_key( $key['license_key'] ) === $obfuscated_key ) {
					$keys[] = $key['license_key'];
				}
			}
		}

		$res = LLMS_Helper_Keys::deactivate_keys( $keys );

		if ( is_wp_error( $res ) ) {
			LLMS_Admin_Notices::flash_notice( $res->get_error_message(), 'error' );
			return;
		}

		foreach ( $keys as $key ) {
			LLMS_Helper_Keys::remove_license_key( $key );
			/* Translators: %s = License Key */
			LLMS_Admin_Notices::flash_notice( sprintf( __( 'License key "%s" was removed from this site.', 'lifterlms' ), llms_obfuscate_license_key( $key ) ), 'info' );
		}

		if ( isset( $data['errors'] ) ) {
			foreach ( $data['errors'] as $error ) {
				LLMS_Admin_Notices::flash_notice( make_clickable( $error ), 'error' );
			}
		}
	}