Unfortunately, the free upgrade period for Windows 10 is over, but it was only valid for machines running Windows 7 or Windows 8.1, so dgjlovette wouldn't have been able to take advantage of it, anyway.
I hope the Linux Mint works well in place of a newer Windows OS. It will probably run better on an older machine than Windows 10 would, too.
If you installed the 32 bit version the meter may not work on your system. He created it for a 64 bit version of Linux, but your computer didn't really have enough memory to run a 64 bit version. Unfortunately, you are probably going to be relegated to viewing the data usage on the System Control Center and signing it at the main site. Signing in at the main site will give you much more info.
SCC - http://192.168.0.1/
Main site - http://my.hughesnet.com/
The main site only breaks down by the hour on the current day.
You can also try the following site, but it doesn't always work and it's no longer officially supported....