Same for me...since Sunday afternoon as well. Tried different browsers, Incognito, etc, no luck. Disappointing but to be expected I guess. I used https://www.tax1099.com/ to file my remaining 1099s. Can handle manual entry & upload.

First 20 - $2.90; 21-150 $2.19; 151-500 - $1.25; 501-1000 $.065