401 Authoization Error, Can't Save Score Then Can't Open Score

I'm having consistent issues saving any score I either create or have had saved already. A "401: Authorization Error" window pops up but I can't find any useful information on how to actually fix and prevent this from occurring. Not only can I not save a score, it's made worse that I can hardly ever access ANY score because they become "Invalid" after the pop up window. To be clear, this happens with scores I've had saved for weeks to months, not just new scores.
If anyone has solved this issue, I'd love to know.