Ubuntu operating system

Hi

I downloaded the image for Ubuntu 22 from your website and flashed the same on a mocroSD card. I was successful in getting this going till I got the login prompt and I used the username: Libre and password: computer and it failed disallowing me to be able to get into the system to do anything whatsoever. Please advise how to address this issue.
Thanks
ravi

Read the release notes for the version you downloaded.