Coinbase Advanced Trade has been malfunctioning for a while now. I have confirmed with others that they are
https://sites.google.com/view/coinbasedesk/blog/coinbase-advanced-trading-not-working
https://sites.google.com/view/coinbasedesk/blog/coinbase-not-working
https://sites.google.com/view/coinbasedesk/blog/coinbase-identity-verification