That's not the right URL. The URL should look like this:
https://testmy.net/quickstats/yourusername
Replace the "yourusername" with the username you use for Testmy.
While signed into your testmy.net account, click on My Results on the upper right. Then copy and paste the URL in the address bar of the My Results page. That's what we need. It will look like what maratsade described.
After a little searching, I found this...
https://testmy.net/quickstats/Cox5000
If this is you, you need to run more tests, and they need to be run in a specific way (LAN cable device, WiFi disabled, specific sizes, etc.). The instructions for the tests are in the following post...
https://community.hughesnet.com/t5/Tech-Support/Think-you-have-slow-speeds/m-p/110034#M74607
Good morning Chcox5000,
We're closing this thread since we never got a reply from you. I ran diagnostics on your site and found that the HughesNet system is working normally. If you still have concerns, please start a new thread and include a detailed explanation so we can more effectively help you.