WFS unreliable WIFI connection

I can connect with PC or Tablet to the WFS210, but the connection is unreliable: the connection drops after 30min to 3hours. When the connections drops the “App connect lamp” remains on. It is not possible to reconnect, I have to switch off the WFS210, then on, reestablish the Wifi connection and then I can restart.
I am not living in a city, so the Wifi band is not crowded, and the distance to the WFS is about 3m.
The instrument is in its price category very nice, but this problem is a severe obstacle for its use.

PS:
It would be nice if the WFS210 scope could be triggered by a software command.