Sorry for the late reply. Happy New Year Everyone!
About this topic: I´m sure my gateway wasn´t receiving any data from the sensor, but not sure if the gateway reached the AU gateway. As an update about this issue, I asked through this forum thread TTIG AU915 support to add my gateway to the AU915 frequency plan, and as soon as this was applied, the TTIG received data from the PlacePod. Right now everything is working as expected.