If you just have a 5-in-1 and an Access then all you can do is send your data to myAcurite and Weather Underground. It isn't possible to send to WeatherCloud.
Notepad++ is just a file text editor. Where are you finding to enter in WeatherCloud info? Sounds like you are just editing a file that doesn't have any function. Editing a note file does not accomplish any action unless the file you are editing is something that other running software can act on the data being changed.
We really just need some more information as to what you have, where are you entering WeatherCloud Station information, what you are trying to accomplish, and what instructions you are following.