When accessing a freshly installed Aria Operations appliance you are met with a "continue setup" message that when pressed, carries through a setup wizard and refreshes back to the "continue setup" once done instead of completing the deployment.
Aria Operations 18.x
This can be caused by either a browser caching issue or the use of an incorrect account when performing the setup.
Navigate back to the Aria Operations appliance in a Private Browser window. Once there, log in as Admin and continue the setup.