I uploaded to my website all files and cannot find install?

I get the below error message.

Not Found

The requested URL /install was not found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

when you uploaded the files to your website did you upload the webroot folder or the contents of the folder? i.e. when viewing the files in the root of your website is there a webroot folder then an install folder within that folder? you need to copy the content of the webroot folder and not the actual webroot folder to the root of your website.

I did upload the contents of the folder not the folder itself however it did not work...

what domain did you install Tandem Server on? If you would like you can send an email to tssupport@tandemserver.org with some temporary FTP login credentials and we will take a look for you.