Having weather show on watch face (API key, OWM widget)

I really like this watch face and downloaded it. M

https://apps.garmin.com/en-US/apps/f314b35e-e5d1-4bac-a5d7-87cca7fe1b78#0

To display weather the instructions say: 

Weather:

This watch face need your own API key for weather (for free on openweathermap.com). After installation you can probably see text "NO GPS" or "NO DATA". If you see "NO GPS" so you must go outside and for a while turn on the GPS. Then you will see "NO DATA" and if you have active Garmin Connect Mobile app in your phone so you must only wait for first dowload - it take aproximately 20 minutes.

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I think I've done this correctly, and I also downloaded the OWM widget. https://apps.garmin.com/en-US/apps/6a740b9d-7bba-4ed8-bedd-2cabaef4bdcf The watch face still doesn't show the temp and the OWM widget doesn't show the weather. Seems there MAY be some issues based on forum research but I'm not 100% certain. If weather functionality indeed works I'm looking for as simple step-by-step instructions as possible. Thank you.