For anyone else running into this issue, I was able to manually download the orbit files from here:
http://step.esa.int/auxdata/orbits/Sentinel-1/POEORB/
And load them into my .snap\auxdata\Orbits\Sentinel-1\POEORB folder. This allowed me to proceed with running the software as normal, but I have yet to figure out whats stopping the software from downloading the orbits automatically from the website.