Alamy have separate 'area' that photos have to go into. One is Stock (another is News, there is a third which I cannot recall). So you have to find a way to tell your uploader which of the areas you want your submission to go to.
With my system, I had to add /Stock after their 'normal' ftp address. It worked.
Guess you'd do the same with /News etc but I haven't tried that.