I have been trying to update to Big Sur RC2 since 11/10 but I keep on getting the following error: Installation of macOS could not continue. Installation requires downloading important content. That content can't be downloaded at this time. Try again later. This is on the "Install Big Sur" application. All of Apple systems are up.

I am having a problem trying to log into icloud with Apple ID 1 and App Store with Apple ID 2. These work fine in MacOS 10.15.3 but do not work in this beta.I know my usernamer/passwords are correct as I can log into the Web equivalents. I just can't use anything on MacOS 10.15.5 beta 2 or 3 that has a Apple ID.