Weather Widget & Toggle help please

Hi I am hoping you can help me. I have had this app for 2 years. No prob.think I turned off the weather service by accident (When trying to select a weather service) and can't figure out how to turn back on. Now I just get N/A instead of weather or weather graphics. I have uninstalled and installed many times. Can you help?

How do I access ACCUWEATHER/GOOGLE WEATHER option?

Thanks!

D