OVMS stops updating server

2014 Nissan leaf.Ovms 3

In the last few months, maybe even a year I've noticed after  some days or weeks the server stops getting updates from the OVMS module.

The wifi hotspot in the car seems to be active. After rebooting the device  (unplugging the OBD cable and replugging it) the communication starts up again.

Let me know if you need more info and how can I get it from the OVMS.

thanks

Balazs