diff --git a/server/server.go b/server/server.go
index 7495f23..ddd7556 100644
--- a/server/server.go
+++ b/server/server.go
@@ -39,7 +39,6 @@ import (
 - HIGH Rate limiting: Sensitive endpoints (account/login/change-password/...)
 - HIGH Stripe payment methods
 - MEDIUM: Test new token endpoints & never-expiring token
-- MEDIUM: Test that anonymous user and user without tier are the same visitor
 - MEDIUM: Make sure account endpoints make sense for admins
 - MEDIUM: Reservation (UI): Show "This topic is reserved" error message when trying to reserve a reserved topic (Thorben)
 - MEDIUM: Reservation (UI): Ask for confirmation when removing reservation (deadcade)
diff --git a/server/server_account_test.go b/server/server_account_test.go
index fa98772..fe5fe0f 100644
--- a/server/server_account_test.go
+++ b/server/server_account_test.go
@@ -622,3 +622,50 @@ func TestAccount_Reservation_Add_Kills_Other_Subscribers(t *testing.T) {
 		t.Fatal("Waiting for user subscription to be killed failed")
 	}
 }
+
+func TestAccount_Persist_UserStats_After_Tier_Change(t *testing.T) {
+	conf := newTestConfigWithAuthFile(t)
+	conf.AuthDefault = user.PermissionReadWrite
+	conf.AuthStatsQueueWriterInterval = 100 * time.Millisecond
+	s := newTestServer(t, conf)
+	defer s.closeDatabases()
+
+	// Create user with tier
+	require.Nil(t, s.userManager.AddUser("phil", "phil", user.RoleUser))
+	require.Nil(t, s.userManager.CreateTier(&user.Tier{
+		Code:         "starter",
+		MessageLimit: 10,
+	}))
+	require.Nil(t, s.userManager.CreateTier(&user.Tier{
+		Code:         "pro",
+		MessageLimit: 20,
+	}))
+	require.Nil(t, s.userManager.ChangeTier("phil", "starter"))
+
+	// Publish a message
+	rr := request(t, s, "POST", "/mytopic", "hi", map[string]string{
+		"Authorization": util.BasicAuth("phil", "phil"),
+	})
+	require.Equal(t, 200, rr.Code)
+
+	// Wait for stats queue writer
+	time.Sleep(200 * time.Millisecond)
+
+	// Verify that message stats were persisted
+	u, err := s.userManager.User("phil")
+	require.Nil(t, err)
+	require.Equal(t, int64(1), u.Stats.Messages)
+
+	// Change tier, make a request (to reset limiters)
+	require.Nil(t, s.userManager.ChangeTier("phil", "pro"))
+	rr = request(t, s, "GET", "/v1/account", "", map[string]string{
+		"Authorization": util.BasicAuth("phil", "phil"),
+	})
+	require.Equal(t, 200, rr.Code)
+
+	// Verify that message stats were persisted
+	time.Sleep(300 * time.Millisecond)
+	u, err = s.userManager.User("phil")
+	require.Nil(t, err)
+	require.Equal(t, int64(0), u.Stats.Messages) // v.EnqueueStats had run!
+}
diff --git a/server/server_test.go b/server/server_test.go
index 3c49114..c3bb9cf 100644
--- a/server/server_test.go
+++ b/server/server_test.go
@@ -1785,10 +1785,45 @@ func TestServer_PublishWhileUpdatingStatsWithLotsOfMessages(t *testing.T) {
 	log.Info("Done: Publishing message; took %s", time.Since(start).Round(time.Millisecond))
 
 	// Wait for all goroutines
-	<-statsChan
+	select {
+	case <-statsChan:
+	case <-time.After(10 * time.Second):
+		t.Fatal("Timed out waiting for Go routines")
+	}
 	log.Info("Done: Waiting for all locks")
 }
 
+func TestServer_AnonymousUser_And_NonTierUser_Are_Same_Visitor(t *testing.T) {
+	conf := newTestConfigWithAuthFile(t)
+	s := newTestServer(t, conf)
+	defer s.closeDatabases()
+
+	// Create user without tier
+	require.Nil(t, s.userManager.AddUser("phil", "phil", user.RoleUser))
+
+	// Publish a message (anonymous user)
+	rr := request(t, s, "POST", "/mytopic", "hi", nil)
+	require.Equal(t, 200, rr.Code)
+
+	// Publish a message (non-tier user)
+	rr = request(t, s, "POST", "/mytopic", "hi", map[string]string{
+		"Authorization": util.BasicAuth("phil", "phil"),
+	})
+	require.Equal(t, 200, rr.Code)
+
+	// User stats (anonymous user)
+	rr = request(t, s, "GET", "/v1/account", "", nil)
+	account, _ := util.UnmarshalJSON[apiAccountResponse](io.NopCloser(rr.Body))
+	require.Equal(t, int64(2), account.Stats.Messages)
+
+	// User stats (non-tier user)
+	rr = request(t, s, "GET", "/v1/account", "", map[string]string{
+		"Authorization": util.BasicAuth("phil", "phil"),
+	})
+	account, _ = util.UnmarshalJSON[apiAccountResponse](io.NopCloser(rr.Body))
+	require.Equal(t, int64(2), account.Stats.Messages)
+}
+
 func newTestConfig(t *testing.T) *Config {
 	conf := NewConfig()
 	conf.BaseURL = "http://127.0.0.1:12345"
diff --git a/server/visitor.go b/server/visitor.go
index 84816fd..e2966dc 100644
--- a/server/visitor.go
+++ b/server/visitor.go
@@ -302,13 +302,12 @@ func (v *visitor) resetLimitersNoLock(messages, emails int64, enqueueUpdate bool
 	} else {
 		v.accountLimiter = nil // Users cannot create accounts when logged in
 	}
-	/*
-		if enqueueUpdate && v.user != nil {
-			go v.userManager.EnqueueStats(v.user.ID, &user.Stats{
-				Messages: messages,
-				Emails:   emails,
-			})
-		}*/
+	if enqueueUpdate && v.user != nil {
+		go v.userManager.EnqueueStats(v.user.ID, &user.Stats{
+			Messages: messages,
+			Emails:   emails,
+		})
+	}
 }
 
 func (v *visitor) Limits() *visitorLimits {
diff --git a/user/manager.go b/user/manager.go
index 7009d12..a3f79f6 100644
--- a/user/manager.go
+++ b/user/manager.go
@@ -1113,7 +1113,7 @@ func (a *Manager) CreateTier(tier *Tier) error {
 	if tier.ID == "" {
 		tier.ID = util.RandomStringPrefix(tierIDPrefix, tierIDLength)
 	}
-	if _, err := a.db.Exec(insertTierQuery, tier.ID, tier.Code, tier.Name, tier.MessageLimit, int64(tier.MessageExpiryDuration.Seconds()), tier.EmailLimit, tier.ReservationLimit, tier.AttachmentFileSizeLimit, tier.AttachmentTotalSizeLimit, int64(tier.AttachmentExpiryDuration.Seconds()), tier.AttachmentBandwidthLimit, tier.StripePriceID); err != nil {
+	if _, err := a.db.Exec(insertTierQuery, tier.ID, tier.Code, tier.Name, tier.MessageLimit, int64(tier.MessageExpiryDuration.Seconds()), tier.EmailLimit, tier.ReservationLimit, tier.AttachmentFileSizeLimit, tier.AttachmentTotalSizeLimit, int64(tier.AttachmentExpiryDuration.Seconds()), tier.AttachmentBandwidthLimit, nullString(tier.StripePriceID)); err != nil {
 		return err
 	}
 	return nil