Prosites Pay to Blog Language file

Hi,

I am trying to change the 'pay to blog / disabled' message

This site is temporarily disabled until payment is received. Please check back later.

I have of course edited with the psts language files with poedit and installed it, but nothing changes (I have checked with other psts language changes so I know the file in general is working).

I am assuming that this message get loaded up into some option at some stage so it can be used elsewhere that is why it isn't changing. I have tried re-saving pro-sites setting but that didn't do the trick.
How can I 'force' the language change?

Alan