I have a RUT240 with firmware RUT2XX_R_00.01.12.2 . I configured the Teltonika to use the local MQTT broker and added AWS IoT as MQTT bridge.
When I have WAN configured as WAN, meaning through ethernet cable the Teltonika can publish and subscribe to messages to and from AWS IoT. I can get the signal strength and connection, temperature etc. through MQTT remotely this way. Once I change to use the mobile network connection as WAN the MQTT connection to AWS IoT does not work anymore. Reboot did not help either.
Any support is greatly appreciated
Can you please PM me with troubleshoot file (System -> Administration -> Troubleshoot) when issue persist?
Also, when you use mobile WAN, can you ping 126.96.36.199 or 188.8.131.52 from router itself?