Downloads site does not display mirror option, cannot download

The downloads site is not currently working.

The mirror option was not available to select. When clicking "Download", an error is returned. See attached image.

Repeated x2 on Firefox, once on Chromium as well.

In between, there was a different error. The mirror DID appear, but most of the other fields did not. Download was possible in this scenario (but not fine-tuning the selection)