I have an update regarding this issue.
I set up a new API key from Open Weather and also found that I was not able to return data. On some calls, including the daily forecast, I was not able to return the data.
Please can all users experiencing this issue confirm if they have subscribed to the One Call API key or the free API key? If you have the free key only, please can you try subscribing to the One Call key and confirm if the issue persists? It would also be helpful to know if the following calls work with your One Call API key (you will need to add your key to the appid= variable at the end of the call.):
https://api.openweathermap.org/data/2.5/onecall?lat=50&lon=0&appid=
https://api.openweathermap.org/data/3.0/onecall?lat=50&lon=0&appid=
Please note that if you make more than 1,000 API calls in a day when using the One Call API key that a charge will be incurred. If you intend to use this API for free you will need to make sure your displays are configured to make a total number of calls each day that is less than that.
I look forward to hearing from @Abel_Antonio_Jimenez @Cedric_REYMOND and @Alejandro_Meza and if the issue is resolved when using a One Call API key from Open weather.
Many Thanks.