diff --git a/docs/configuration/index.md b/docs/configuration/index.md
index 557a3e8a..1c3fce80 100644
--- a/docs/configuration/index.md
+++ b/docs/configuration/index.md
@@ -86,7 +86,7 @@ Supported external time sources are GPS, LORAWAN network time and LORAWAN applic
 
 !!! tip
 
-	If your LORAWAN network does not support network time, you can run a Node-Red timeserver application using the enclosed [**Timeserver code**](https://github.com/cyberman54/ESP32-Paxcounter/blob/master/src/Node-RED/Timeserver.json). Configure the MQTT nodes in Node-Red for the LORAWAN application used by your paxocunter device. Time can also be set without precision liability, by simple remote command, see section remote control.
+	If your LORAWAN network does not support network time, you can run a Node-Red timeserver application using the enclosed [**Timeserver code**](https://github.com/cyberman54/ESP32-Paxcounter/blob/master/src/Node-RED/Timeserver.json). Configure the MQTT nodes in Node-Red for the LORAWAN application used by your paxcounter device. Time can also be set without precision liability, by simple remote command, see section remote control.
 
 ## Syncing multiple paxcounters 
 
diff --git a/docs/payloadformat.md b/docs/payloadformat.md
index 5e4aae16..18dbd8fb 100644
--- a/docs/payloadformat.md
+++ b/docs/payloadformat.md
@@ -7,7 +7,7 @@ You can select different payload formats in [`paxcounter.conf`](https://github.c
 
 - ***Packed*** uses little endian format and generates json fields
 
-- [***CayenneLPP***](https://mydevices.com/cayenne/docs/lora/#lora-cayenne-low-power-payload-reference-implementation) generates MyDevices Cayenne readable fields
+- [***CayenneLPP***](https://developers.mydevices.com/cayenne/docs/lora/#lora-cayenne-low-power-payload) generates MyDevices Cayenne readable fields
 
 
 ```c linenums="20" title="src/paxcounter_orig.conf"
diff --git a/src/hal/heltec.h b/src/hal/heltec.h
index 3546089e..e9b0198e 100644
--- a/src/hal/heltec.h
+++ b/src/hal/heltec.h
@@ -8,7 +8,7 @@
 #include <stdint.h>
 
 // Hardware related definitions for Heltec V1 LoRa-32 Board
-// see https://heltec-automation-docs.readthedocs.io/en/latest/esp32/wifi_lora_32/hardware_update_log.html#v1
+// see https://docs.heltec.org/en/node/esp32/dev-board/hardware_update_log.html#v1
 
 #define HAS_LORA 1 // comment out if device shall not send data via LoRa
 #define CFG_sx1276_radio 1
diff --git a/src/hal/heltecv2.h b/src/hal/heltecv2.h
index b047bdd8..937ac6a5 100644
--- a/src/hal/heltecv2.h
+++ b/src/hal/heltecv2.h
@@ -8,7 +8,7 @@
 #include <stdint.h>
 
 // Hardware related definitions for Heltec V2 LoRa-32 Board
-// see https://heltec-automation-docs.readthedocs.io/en/latest/esp32/wifi_lora_32/hardware_update_log.html#v2
+// see https://docs.heltec.org/en/node/esp32/dev-board/hardware_update_log.html#v2
 
 #define HAS_LORA 1       // comment out if device shall not send data via LoRa
 #define CFG_sx1276_radio 1
diff --git a/src/hal/heltecv21.h b/src/hal/heltecv21.h
index 9372325d..011e34c6 100644
--- a/src/hal/heltecv21.h
+++ b/src/hal/heltecv21.h
@@ -8,7 +8,7 @@
 #include <stdint.h>
 
 // Hardware related definitions for Heltec V2.1 LoRa-32 Board
-// see https://heltec-automation-docs.readthedocs.io/en/latest/esp32/wifi_lora_32/hardware_update_log.html#v2-1
+// see https://docs.heltec.org/en/node/esp32/dev-board/hardware_update_log.html#v2-1
 
 #define HAS_LORA 1       // comment out if device shall not send data via LoRa
 #define CFG_sx1276_radio 1
diff --git a/src/lmic_config.h b/src/lmic_config.h
index 51c7b63f..c544c81b 100644
--- a/src/lmic_config.h
+++ b/src/lmic_config.h
@@ -7,13 +7,10 @@
 // --> please check with you local regulations for ISM band frequency use!
 
 #define CFG_eu868 1 // Europe (high band)
-//#define CFG_eu433 1 // Europe (low band)
 //#define CFG_us915 1 // USA, Canada and South America
 //#define CFG_in866 1 // India
 //#define CFG_au915 1 // Australia
 //#define CFG_as923 1 // Asia
-//#define CFG_cn783 1 // China (high band)
-//#define CFG_cn490 1 // China (low band)
 //#define CFG_kr920 1 // Korea
 
 // LMIC LORAWAN STACK SETTINGS