Thanks for that, I guess the following probably answers the question for the time being
"IMPORTANT NOTE: The "Advanced API" method (typically used for caching images locally) will no longer be supported for non-paying accounts."
As the component grabs and caches the shots occassionally (using the PHP STW class) I'd assume it's using the advanced API. I take it there isn't a 'not-so' advanced API we could use to achieve the same task?
If not, then I guess it's a case of looking at implementing some client-side stuff so that free accounts will work again.