diff --git a/classes/gateway.php b/classes/gateway.php
index 24b142a..8c3017e 100644
--- a/classes/gateway.php
+++ b/classes/gateway.php
@@ -236,9 +236,11 @@ public static function add_configuration_to_gateway_form(\core_payment\form\acco
 
         $mform->addElement('text', 'suggest', get_string('suggest', 'paygw_yookassa'), ['size' => 10]);
         $mform->setType('suggest', PARAM_TEXT);
+        $mform->disabledIf('suggest', 'fixcost', "neq", 0);
 
         $mform->addElement('text', 'maxcost', get_string('maxcost', 'paygw_yookassa'), ['size' => 10]);
         $mform->setType('maxcost', PARAM_TEXT);
+        $mform->disabledIf('maxcost', 'fixcost', "neq", 0);
 
         global $CFG;
         $mform->addElement('html', '<div class="label-callback" style="background: pink; padding: 15px;">' .
diff --git a/lang/en/paygw_yookassa.php b/lang/en/paygw_yookassa.php
index 1a177cf..cff2393 100644
--- a/lang/en/paygw_yookassa.php
+++ b/lang/en/paygw_yookassa.php
@@ -23,7 +23,7 @@
  */
 $string['abouttopay'] = 'You are about to pay for';
 $string['apikey'] = 'API Key';
-$string['callback_help'] = 'Copy this line and paste it into "HTTP notifications" in the YooKassa store settings, and enable "payment.succeeded" notifications there.';
+$string['callback_help'] = 'Copy this line and paste it into "HTTP notifications" in the YooKassa store settings, and enable "payment.succeeded" and "payment.canceled" notifications there.';
 $string['callback_url'] = 'Notification URL:';
 $string['fixdesc'] = 'Fixed payment comment';
 $string['fixdesc_help'] = 'This setting sets a fixed comment for all payments.';
diff --git a/version.php b/version.php
index 7b3eba9..798578a 100644
--- a/version.php
+++ b/version.php
@@ -24,7 +24,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version   = 2024071900;
+$plugin->version   = 2024071901;
 $plugin->requires  = 2023100900;
 $plugin->component = 'paygw_yookassa';
 $plugin->release   = '2.2';