I am working with a gateway that is connected to my The Thing Stack cloud account, and also I have a sensor close to that gateway that only works with TTN. So, I want to use the packet broker to forward the data of that sensor from TTI cloud to TTN in order to add the sensor to my sandbox application. However, I enabled the packet broker in my TTI cloud account and I can see the sensor data in my TTI cloud console but when trying to add the sensor as end device in TTN sandbox the device never connects. So, I want to know if there is any specific configuration that I must follow or I misunderstood how the packet broker works. Regards
No
Probably not.
Re-read the other thread you posted to - look at the pleas for information that a volunteer gave that was roundly ignored by the OP and perhaps give us that information.
Also, how so a sensor can only work on TTN. If that’s true, what information would help us debug this situation that you’ve not yet given!
Thanks for your reply. The sensor is the Victron Lora Modules that are being monitored using the VRM portal.
Yesterday, I turned off my sensor before leaving, which is why I couldn’t capture screenshots of the uplink messages overnight to reply to you before. Today, however, I started taking screenshots, and unexpectedly, I began receiving uplinks on the other cluster. I didn’t make any changes to the configuration, so I can only assume that yesterday the Packet Broker might have been oversaturated. I can’t think of any other explanation
If it can be copied & pasted as text, please do that rather than screen shots which, by all accounts would have been screen shots showing no uplinks which is a bit meta.
This is a commercial grade service offering that is core to the TTI infrastructure - I think you need to look to your device that had its power cycled on it in the first instance.
Clarification please - is the ‘thing’ that is on TTN the sensor or the GW or both?
As you also say
IIRC Victron devices work on their own system and getting them into TTN/TTS can be a pain - I think there are posts on the forum covering the issues there from some years back (I dont have time to go search again myself - I looked at this <BC when setting up Victron Solar PSU Controllers years ago…) so a crafted search on the forum may yield more. If device is only register with Victron portal and not registered in TTN (remember you cant have two networks managing a device) you wont pass go and certainly won’t collect £$€200 etc. 
PacketBroker operation then moot.
A problem child.