https://xxx.xxxxxxx.edu/~xxx-xxxx/upload(https://xxx.xxxxxxx.edu/~xxx-xxxx/upload)
that is the default and thats whats entered in the url field
My guess would be that osTicket isn't configured to read https links.
Edit this file: /upload/setup/inc/install.inc.php
Line: 6
Change:
$info=rtrim('http://'.$_SERVER.dirname($_SERVER),'setup');
To
$info=rtrim('https://'.$_SERVER.dirname($_SERVER),'setup');
I would think just adding the s to http would also work.