diff --git a/wled00/udp.cpp b/wled00/udp.cpp
index e380e9e2b..14eda6dfa 100644
--- a/wled00/udp.cpp
+++ b/wled00/udp.cpp
@@ -225,7 +225,10 @@ void handleNotifications()
     byte version = udpIn[11];
 
     // if we are not part of any sync group ignore message
-    if (version > 8 && !(receiveGroups & udpIn[36])) return;
+    if (version < 9 || version > 199) {
+      // legacy senders are treated as if sending in sync group 1 only
+      if (!(receiveGroups & 0x01)) return;
+    } else if (!(receiveGroups & udpIn[36])) return;
     
     bool someSel = (receiveNotificationBrightness || receiveNotificationColor || receiveNotificationEffects);
     //apply colors from notification
@@ -270,7 +273,7 @@ void handleNotifications()
     }
 
     //adjust system time, but only if sender is more accurate than self
-    if (version > 7)
+    if (version > 7 && version < 200)
     {
       Toki::Time tm;
       tm.sec = (udpIn[30] << 24) | (udpIn[31] << 16) | (udpIn[32] << 8) | (udpIn[33]);