[atlas] Weird issue with Probe 54041

Hey team, my Probe 54041 stops working every couple of days. It always show connected but it does not send any measurements data. Any idea what could be wrong? After cold reboot it works for some time and then again. Cables and power source replaced couple of times. It is directly connected to Vodafone provided router, but it probably does not matter.It is in remote location so I can't get there frequently. Cheers Jiri