Won't install

I click on download, it gives me the little download thing at the bottom of the browser so I can begin the set-up.
I click that, click run, “couldn’t run”, click retry, “item may have been moved or deleted”
…what? how? when?
I’m not sure what to do or how to go about even downloading Horizon at this point.
If anyone has any ideas I would greatly appreciate it

Use the download Horizon button just under this message in my signature. It should install properly.

Thank you thank you thank you!!