Here’s the FAQ for recovering your settings if you loose them: Recovering Weather Display Configuration
Make sure you always closed WD using Exit > Save & Exit to avoid loosing settings. WD doesn’t like hard shut downs as can corrupt files if they are being updated at the time of the shut down.
The spikes could be generated from your weather station. I had a LaCrosse years ago which would give wind spikes and I ended up fitting some ferrite clamps to the power lead & USB cable to try & stops it. These made it better but I still got the odd spike.
It may be handy to know the type of station you’re using in case someone else has had the same issue. 