Craggenmore, it seems this has happened to a few. Email your fleet chic and they should fix it.
The leave system now is ****e. Fleet give themselves pats on the back for ensuring pilots get 30 days. Not being able to see what days are still available means any future leave bid is a shot in the dark. As the majority of pilots here come from other parts of the world, short notice leave does not tend to work too well. I have met a large number of people on forced leave at the moment as well.
Keep recovering
The Don