EOTopo 2015/1 down load

I have been trying to down load EOTopo 2015/1, (my payment was confirmed and I am using the Down load page) However, at the end of each download (100%) it disappears from the download page, a search of my PC is unable to find it. On the larger files, a security check takes place at the end of the down load with the same result, the down loaded file disappears. I am running Windows 10. I might also add that at the end o the down load, a window pops up asking what app to save the down loaded file to. I am trying to load the files to Exploroz on my Galaxy S4.
If anyone has a solution for me I would be grateful to hear it. This is most frustrating. Cheers