Welcome to Vodafone Community
It's difficult to say. It may be that there's been a server issue which will sort itself out in time. However, there are other widgets you can use - have a look in the app drawer. There are various clocks you can add to one of the homescreens and a weather widget from Accuweather that's pretty good. You can also get their full app, which is very comprehensive or the BBC one, which is smaller and quicker.