diff --git a/assets/js/src/nps_poll.jsx b/assets/js/src/nps_poll.jsx
index ad3183c635..17e5826b84 100644
--- a/assets/js/src/nps_poll.jsx
+++ b/assets/js/src/nps_poll.jsx
@@ -41,10 +41,7 @@ const withNpsPoll = function withNpsPoll(Component) {
     }
 
     displayPoll() {
-      if (
-        !this.state.pollShown
-        && window.mailpoet_installed_at_isoFormat
-      ) {
+      if (!this.state.pollShown) {
         this.setState({ pollShown: true });
         getTrackingData().then(this.callSatismeter);
       }
@@ -59,9 +56,9 @@ const withNpsPoll = function withNpsPoll(Component) {
         traits: {
           name: window.mailpoet_current_wp_user.user_nicename,
           email: window.mailpoet_current_wp_user.user_email,
-          createdAt: window.mailpoet_installed_at_isoFormat,
           mailpoetVersion: window.mailpoet_version,
           mailpoetPremiumIsActive: window.mailpoet_premium_active,
+          createdAt: trackingData.installedAtIso,
           newslettersSent: trackingData.newslettersSent,
           welcomeEmails: trackingData.welcomeEmails,
           postnotificationEmails: trackingData.postnotificationEmails,
diff --git a/lib/Analytics/Reporter.php b/lib/Analytics/Reporter.php
index f9ec0bbe45..8fb815d42a 100644
--- a/lib/Analytics/Reporter.php
+++ b/lib/Analytics/Reporter.php
@@ -1,6 +1,7 @@
 <?php
 namespace MailPoet\Analytics;
 
+use \DateTime;
 use MailPoet\Config\ServicesChecker;
 use MailPoet\Cron\CronTrigger;
 use MailPoet\Models\Newsletter;
@@ -106,7 +107,9 @@ class Reporter {
     $newletters = Newsletter::getAnalytics();
     $segments = Segment::getAnalytics();
     $mta = $this->settings->get('mta', []);
+    $installed_at = new DateTime($this->settings->get('installed_at'));
     return [
+      'installedAtIso' => $installed_at->format(DateTime::ISO8601),
       'newslettersSent' => $newletters['sent_newsletters_count'],
       'welcomeEmails' => $newletters['welcome_newsletters_count'],
       'postnotificationEmails' => $newletters['notifications_count'],
diff --git a/views/newsletters.html b/views/newsletters.html
index 16fb917277..1764ae43cd 100644
--- a/views/newsletters.html
+++ b/views/newsletters.html
@@ -8,7 +8,6 @@
     var mailpoet_display_nps_poll = <%= settings.display_nps_poll ? 'true' : 'false' %>;
     var mailpoet_segments = <%= json_encode(segments) %>;
     var mailpoet_show_congratulate_after_first_newsletter = <%= show_congratulate_after_first_newsletter %>;
-    var mailpoet_installed_at_isoFormat = "<%= settings['installed_at'] | date('c') %>";
     var mailpoet_installed_days_ago = <%= installed_days_ago %>;
     var mailpoet_current_wp_user = <%= json_encode(current_wp_user) %>;
     var mailpoet_current_wp_user_firstname = '<%= current_wp_user_firstname %>';