Since the account is a tech issue, make sure that you talk with the tech support staff, not admissions or academic staff. That might result in emails passed around and lost.
On
this page they show this as the tech link:
NationsUniversity®
I skimmed some reviews, and they are not good. Some of the problems are due to online study requiring a lot of reading, but also unannounced changes in policy, aid, and billing. One site gathered a 63% recommend rate. More than one person said their free $0 + tech fees were later charged at the full tuition rate.
Since it is not accredited, the degree might not necessarily improve your chances of getting work in a field. You can find information in so many ways these days, to build your own skills. It can show that you meet deadlines and committed to mastering a body of information.
What you experienced is not unusual, but it is a sign that systems are not organized or workers are too overloaded to respond. Tuition pays salaries, and if tuition is this low, then staff might not be able to sustain a thriving, responsive relationship with students.
Even if they started with great motives and ideals, it doesn't seem to be an organized place.
Still, some reviews were positive.