Qubino devices loosing connection

[paul.witmond]

We have an installation with 11 qubino binary switches, 6 fibaro sensors and some other devices

Everything is connected to a raspberry

Our house has concrete walls and WiFi is difficult (3 unify units are necessary to make a stable network)

Our problem is that mainly the qubino units loose the connection
Almost every day I have a failed unit which I can fix forcing an interview or a reboot

Can anyone advice me how te get this reliable or should I replace the qubino units?

[PoltoS]

Please do network diagnostics to see failed routes and identify the reason of failures: bad coverage or device issue. If device issue, contact the manufacturer