After upgrading to 20.04 by default I was unable to set up a single sign-on Ubuntu one account to enable lifepatch

Two days ago I have reported a bug describing the complete path starting from the software updater button settings/lifepatch > lifepatch > sign in/lifepatch .... Then a window was opened

Line at top: X [] Ubuntu Single Sign-on Account
Next line: same title as above without X []
Next line: Email address: field
Next line: (*) I have an Ubuntu Single Sign-on Account
Next line: Password: field
Next line: ( ) I want to register for an account now
Next line: ( ) I've forgotten my password
Bottom line: link Privacy Policy

There is no button to confirm any action above

I looked for help at https://help.ubuntu.com/community/CommunityHelpWiki and clicked on support
on the next page https://ubuntu.com/support/community-support I clicked on Lifepatch. Then on
https://ubuntu.com/livepatch I found: free for personal use Get Lifepatch. Next page:
https://auth.livepatch.canonical.com/?_ga=2.18896568.1031641790.1588091589-177936974.1572286294

Get your Lifepatch token. On the next page I got a key and two command lines to enable Lifepatch
https://auth.livepatch.canonical.com/?user_type=ubuntu-user

sudo snap install canonical-livepatch
sudo canonical-livepatch enable ***key*** (a 32 digits code with letters and numbers)

My problem was easily solved using the commands above in a terminal

I feel silly that I have reported this two days ago as a bug. I took me two days to find a solution.

However the popup window Ubuntu Single Sign-on account does not work (properly) and misses a button.