Hi.

I have checked the files on that product and all 4 end with the .zip file extension. I saw that your downloads had been locked due to the number of times you had attempted to download them. So you can try downloading those again. Please delete all previous attempts at downloading first, and then try downloading those again. If you continue to experience issues, you will need to contact the vendor by sitemail here. They would be happy to help you with this. But when those file download they should be .zip files if they are correct. 

Hope this helps. :)