I have found 2 problems:
1. you are not logged in with B2C account. That's why it is stated in the footer of the webpage that you are not logged in.
This is work in progress: https://collaboration.dataminer.services/task/207280
2. The URL you want to navigate to, is not whitelisted, while it should.
Very likely, the certificate address is not configured on the DMA, while it should.
So I verified this and I can confirm that the configuration is missing in MaintenanceSettings XML on DaaS images/systems.
For this, I created a task:
I hope this will help you further