Brada portable dishwasher

Question

I recently bought a Brada dishwasher model EP2402WW second hand. I didn't get the manual for it and for some reason the piece that goes on the sink is not a standard size and I can't seem to find one the will fit. I have contacted The Brick which is as far as I know the only company that sells Brada. They have told me that they can't get me a manual so I don't know quite what to do. I am hoping that someone can help me with either how to get a manual or what size the sink attachment needs to be.