I had this problem too... Sometimes you just have to wait an hr before you can re upload or try making the Image a bit smaller and the Upload and when Inserted Manually enlarge That way Angel
You need to use a graphics program to resize them and more.
And also use some sensible names for your files and NO spaces either in your file names
Your images on your page took me a while to load
They are over a megabyte in size perhaps more
If you used a digital camera your images will actually be too big to put up straight as can be on your site.
So you will need to as said RESIZE all your pictures
You have the free site as well so maybe after you size your pictures down with a graphics program like photoshop or irfanview to a more appropriate size it will be better