As others can not inspect your settings, did you enter the METAR api code in your settings?
You can check yourself all contents of the files
http://www.brecklandweather.com/pwsWD/w34_module_test.php
=> bottom left select “jsondata/metar34.txt”
==> click “List contents”
contents of "./jsondata/metar34.txt", processed as filetype "text file"
Filetime (UTC): 2019-03-29T16:40:44+00:00 which an age of 16 hrs 18 min 34 seconds
The filetimes show that the data is never refreshed.
==> click “Load files” at the bottom
w34_load_files.php (59) METAR not loaded API=ADD YOUR API KEY
The metar-api key was not entered as it still contains the default value.
Wim