I checked your site, it looks to me that you have uploaded the entire folder named 'Mysidia Adoptables v1.3.3' to your site, and therefore the actual installation path is:
http://hatchingmagic.x10.mx/Mysidia Adoptables v1.3.3/install/index.php
I am not sure whether you like it this way though, perhaps it makes better sense to upload whatever is inside the folder Mysidia Adoptables v1.3.3 to your server rather than the folder itself?