This is about to start. The website will be read-only temporarily. https://meta.stackexchange.com/questions/370331/planned-network-maintenance-scheduled-for-friday-october-1-at-0100-0400-utc
Thank you for your patience. This is now complete: https://meta.stackexchange.com/questions/370331/planned-network-maintenance-scheduled-for-friday-october-1-at-0100-0400-utc
Similar thing happened to me this morning with slashdot. I tried to open it on my iPad like I usually do, and got an error. Then, I tried it on my phone and it worked.