Q: pictures are not shown on icloud

Hi,

I`m from Germany and I have some Problems with the "pictutre stream"! On my IPhone and IPad I can see the 1000 Pictures, but on ICloud.com I can not see them. How can this be?

I could see Pictures until September 2014, but I download all of them to my Computer and deleted them after that. Now I can not see any Picture until September

Could you help me?