Station not receiving data: how to manage

Sometimes my station does not receive data from the sensors. The temp on the webcam overlay is about 6553 celsius and Hum 10% (Pic1) and on the mainscreen the last one received (pic2).
Is it possibile to manage it differently? N/A instead of 6553? sending to me an email alert? other?
the model is WH1081
Thanks
Giordano

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what custom tag are you using?
what version/build of WD?

for the webcam overlay I’m simply using the default, so %temp%; I dont know about the mainscreen but is the default one
The WD version in use is always the last one published