Go to this url, WeatherFlow Smart Weather API and click Authorize. In the popup check the user box and click the top Authorize button. Sign in, click allow. Click the expand operations button. Type in anything you want for the device_id, 12345, and click Try It Out. It will show a command like this:
curl -X GET --header 'Accept: application/json' --header 'Authorization: Bearer 7777aaaa-9999-8888-5555-121212434343' 'https://swd.weatherflow.com/swd/rest/observations/device/12345'
The value in bold is your user specific token. Just use that and you can access your private station.