Does this apply to the RUT 240 as well?
My experience is that it may connect as a client to an AP, but will then not act as an AP to connected devices at the same time. The result is that one cannot access both IPs on the "AP-network" and IPs on the "client-network" at the same time.
I have huge issues getting this to work but have started looking for other brands. The beauty of RUT240 is that it has LTE built-in, good antennas and a flawless AP for connecting devices to it. But if one also has other IoTs that are AP that you need to connect to, it cannot be routed via the Teltonika.
Also, think the status page in the admin UI is inadequate. Devices I know are connected (I set the IP and can ping it) are not shown on the page. So in theory you might have devices connected to your RUT AP that you are unaware of since the GUI obviously doesn't show all connected devices.