Sorry for the delay, who still needs help?
UPDATE : Set your permissions on : READ AND WRITE
In my opinion the cloud not be the problem. please add me on twitter @nickbrugman and send me a DM.
@darren – Did you use the consumer key and secret from the OAuth part?
The API key and API secret are not the Consumer secret and Consumer key.
Please let me know if its correct. Otherwise contact me.
when you created the application after saving the settings. There is a grey button with this text : Test OAuth click on it.
When you click it, your consumer key and secret will show up. Copy paste them in the plug-in and authorize you twitter account.