Reset the pw for the DX SaaS tenant and now when try to sign on to the tenant, get a red message that states "Required parameter(s) missing: Authorization.
Release : 21.3
Component : Introscope
It seems like issue may be due to some problem in the network. The network team is able to resolve this issue and it is working good now.
As a test, disconnect from your company VPN network and test the login again. If this works, then it is likely some issue in your company VPN network.