The site has changed and I can't use a URL to the chosen image - where it says "paste a file URL" I can paste it in, but it is immediately overwritten by "paste a file URL" again.
It's the same with Firefox & Chrome.
Post the URL here and put [img] in front of the address and [/img] at the end of it and try that, failing that just paste the URL and I will see if I can do anything