When you say “WDL”, I take it you mean the Weather Display program, rather than Weather Display Live which an old and now unsupported Flash based app for displaying your data?
If it’s the main Weather Display software, what type of datalogger do you have? If it a USB datalogger then make sure the USB ports are not in eco or power saving mode in the system settings of the PC or laptop. This can causes the USB ports to shut down and stop the data feed from your Davis console. Windows 10 Power Save Settings FAQ is HERE.
On older consoles, the shielding on the USB cable supplied by Davis wasn’t the best and changing to a better quality cable stopped the data drop outs.
If you’re loosing the basic settings when the program is restarted, this is normally because the wdisplay.ini file is being updated when the program shuts down and it get corrupted.
HERE’s the FAQ about restoring the settings.
Lastly, from the top menu on the Weather Display program window, you can go to View > Program Event Log to see if anything has been logged in there. At the bottom of the View window there is a “Program Debug Info” button which may give you some information.