diff --git a/pkg/datadogunifi/site.go b/pkg/datadogunifi/site.go
index 2a9f9c32..8b417cf6 100644
--- a/pkg/datadogunifi/site.go
+++ b/pkg/datadogunifi/site.go
@@ -22,8 +22,14 @@ func (u *DatadogUnifi) reportSite(r report, s *unifi.Site) {
 			tag("lan_ip", h.LanIP),
 		}
 
+		// For VPN subsystem, use RemoteUserNumActive for num_user if NumUser is not set
+		numUser := h.NumUser.Val
+		if h.Subsystem == "vpn" && numUser == 0 && h.RemoteUserNumActive.Val > 0 {
+			numUser = h.RemoteUserNumActive.Val
+		}
+
 		data := map[string]float64{
-			"num_user":                 h.NumUser.Val,
+			"num_user":                 numUser,
 			"num_guest":                h.NumGuest.Val,
 			"num_iot":                  h.NumIot.Val,
 			"tx_bytes_r":               h.TxBytesR.Val,
diff --git a/pkg/influxunifi/site.go b/pkg/influxunifi/site.go
index 5d102bec..01138c5e 100644
--- a/pkg/influxunifi/site.go
+++ b/pkg/influxunifi/site.go
@@ -19,8 +19,15 @@ func (u *InfluxUnifi) batchSite(r report, s *unifi.Site) {
 			"gw_name":   h.GwName,
 			"lan_ip":    h.LanIP,
 		}
+
+		// For VPN subsystem, use RemoteUserNumActive for num_user if NumUser is not set
+		numUser := h.NumUser.Val
+		if h.Subsystem == "vpn" && numUser == 0 && h.RemoteUserNumActive.Val > 0 {
+			numUser = h.RemoteUserNumActive.Val
+		}
+
 		fields := map[string]any{
-			"num_user":                 h.NumUser.Val,
+			"num_user":                 numUser,
 			"num_guest":                h.NumGuest.Val,
 			"num_iot":                  h.NumIot.Val,
 			"tx_bytes-r":               h.TxBytesR.Int64(),
diff --git a/pkg/promunifi/site.go b/pkg/promunifi/site.go
index 11e4f6c9..95842f4c 100644
--- a/pkg/promunifi/site.go
+++ b/pkg/promunifi/site.go
@@ -146,7 +146,14 @@ func (u *promUnifi) exportSite(r report, s *unifi.Site) {
 				{u.Site.NumSw, gauge, h.NumSw, labels},
 			})
 		case "vpn":
+			// For VPN subsystem, use RemoteUserNumActive for NumUser if NumUser is not set
+			numUser := h.NumUser.Val
+			if numUser == 0 && h.RemoteUserNumActive.Val > 0 {
+				numUser = h.RemoteUserNumActive.Val
+			}
+
 			r.send([]*metric{
+				{u.Site.NumUser, gauge, numUser, labels},
 				{u.Site.RemoteUserNumActive, gauge, h.RemoteUserNumActive, labels},
 				{u.Site.RemoteUserNumInactive, gauge, h.RemoteUserNumInactive, labels},
 				{u.Site.RemoteUserRxBytes, counter, h.RemoteUserRxBytes, labels},