I'm currently pursuing the Senior System Architect essential 7.3/7.4 course, which requires to download the exercise system for hands on, however after installing the Oracle virtual box and thereafter the exercise system, I'm not able to get the login credentials as the IP is not working.
PFB the screenshots for better understanding of the issue:
Looks like you are having issues with the server. Please restart the virtual machines. Give it 3-4 minutes when it comes up and try and access the URL via a web browser. Note you will want to use the following credentials to get you started on the first exercise.