diff --git a/include/payload.h b/include/payload.h
index aaa38566..5acd0a76 100644
--- a/include/payload.h
+++ b/include/payload.h
@@ -15,7 +15,7 @@
 #define LPP_MSG_CHANNEL 28
 #define LPP_HUMIDITY_CHANNEL 29
 #define LPP_BAROMETER_CHANNEL 30
-#define LPP_GAS_CHANNEL 31
+#define LPP_GAS_CHANNEL 31 
 
 #endif
 
diff --git a/src/cyclic.cpp b/src/cyclic.cpp
index 99329040..4bdaa77d 100644
--- a/src/cyclic.cpp
+++ b/src/cyclic.cpp
@@ -102,11 +102,11 @@ void do_timesync() {
   } else {
     ESP_LOGI(TAG, "No valid GPS time");
   }
-#endif
+#endif // HAS_GPS
   // Schedule a network time request at the next possible time
   LMIC_requestNetworkTime(user_request_network_time_callback, &userUTCTime);
   ESP_LOGI(TAG, "Network time request scheduled");
-#endif
+#endif // TIME_SYNC
 } // do_timesync()
 
 #ifndef VERBOSE
diff --git a/src/lmic_config.h b/src/lmic_config.h
index bfa52ec3..5197f046 100644
--- a/src/lmic_config.h
+++ b/src/lmic_config.h
@@ -22,7 +22,7 @@
 //#define LMIC_USE_INTERRUPTS
 
 //time sync via LoRaWAN network, is not yet supported by TTN (LoRaWAN spec v1.0.3)
-//#define LMIC_ENABLE_DeviceTimeReq 1
+#define LMIC_ENABLE_DeviceTimeReq 1
 
 // 16 μs per tick
 // LMIC requires ticks to be 15.5μs - 100 μs long
diff --git a/src/payload.cpp b/src/payload.cpp
index c6721b00..3a9432d9 100644
--- a/src/payload.cpp
+++ b/src/payload.cpp
@@ -242,8 +242,10 @@ void PayloadConvert::writeBitmap(bool a, bool b, bool c, bool d, bool e, bool f,
   writeUint8(bitmap);
 }
 
-/* ---------------- Cayenne LPP format ---------- */
-// http://community.mydevices.com/t/cayenne-lpp-2-0/7510
+/* ---------------- Cayenne LPP 2.0 format ---------- */
+// see specs http://community.mydevices.com/t/cayenne-lpp-2-0/7510
+// PAYLOAD_ENCODER == 3 -> Dynamic Sensor Payload, using channels -> FPort 1
+// PAYLOAD_ENCODER == 4 -> Packed Sensor Payload, not using channels -> FPort 2
 
 #elif (PAYLOAD_ENCODER == 3 || PAYLOAD_ENCODER == 4)
 
@@ -251,13 +253,15 @@ void PayloadConvert::addCount(uint16_t value1, uint16_t value2) {
 #if (PAYLOAD_ENCODER == 3)
   buffer[cursor++] = LPP_COUNT_WIFI_CHANNEL;
 #endif
-  buffer[cursor++] = LPP_TEMPERATURE;
+  buffer[cursor++] =
+      LPP_LUMINOSITY; // workaround since cayenne has no data type meter
   buffer[cursor++] = highByte(value1);
   buffer[cursor++] = lowByte(value1);
 #if (PAYLOAD_ENCODER == 3)
   buffer[cursor++] = LPP_COUNT_BLE_CHANNEL;
 #endif
-  buffer[cursor++] = LPP_HUMIDITY;
+  buffer[cursor++] =
+      LPP_LUMINOSITY; // workaround since cayenne has no data type meter
   buffer[cursor++] = highByte(value2);
   buffer[cursor++] = lowByte(value2);
 }
diff --git a/src/senddata.cpp b/src/senddata.cpp
index 50a160c0..bc010c12 100644
--- a/src/senddata.cpp
+++ b/src/senddata.cpp
@@ -4,7 +4,7 @@
 // put data to send in RTos Queues used for transmit over channels Lora and SPI
 void SendData(uint8_t port) {
 
-  MessageBuffer_t SendBuffer;
+  MessageBuffer_t SendBuffer; // contains MessageSize, MessagePort, Message[]
 
   SendBuffer.MessageSize = payload.getSize();
   SendBuffer.MessagePort = port;
@@ -14,12 +14,6 @@ void SendData(uint8_t port) {
   lora_enqueuedata(&SendBuffer);
   spi_enqueuedata(&SendBuffer);
 
-  // clear counter if not in cumulative counter mode
-  if ((port == COUNTERPORT) && (cfg.countermode != 1)) {
-    reset_counters(); // clear macs container and reset all counters
-    get_salt();       // get new salt for salting hashes
-    ESP_LOGI(TAG, "Counter cleared");
-  }
 } // SendData
 
 // interrupt triggered function to prepare payload to send
@@ -30,6 +24,13 @@ void sendPayload() {
   payload.addCount(macs_wifi, cfg.blescan ? macs_ble : 0);
   // append GPS data, if present
 
+  // clear counter if not in cumulative counter mode
+  if (cfg.countermode != 1) {
+    reset_counters(); // clear macs container and reset all counters
+    get_salt();       // get new salt for salting hashes
+    ESP_LOGI(TAG, "Counter cleared");
+  }
+
 #ifdef HAS_GPS
   // show NMEA data in debug mode, useful for debugging GPS on board
   // connection