@Meinrad Thanks for bringing this to my attention. The kill button in the current version of the trial account has been removed. I guess this is a good thing, as killing a process touched the OS, and that is something that should not be possible in the cloud.
When I was creating this lesson the kill button button situation was a bit unclear. In Trial it was still visible, but depending on the version you were running it was grayed out. In my BTP Free Tier and Productive accounts it is was grayed out or already removed, again depending on the version I was running. To me this looked like this the services card was in an transition stage where the kill button in the end would be removed.
So to make sure that learners in the "Monitoring Resources in SAP HANA" lesson would be aware of the removal of the kill button, I added a note the states the following: Attention: The Kill Service button in SAP HANA Cloud will be removed from the Manage Services application in SAP HANA Cloud.
It seems that this note went missing during the deployment to the SAP Learning platform, as the note is in the CMS were I work. I will talk to the SAP Learning platform developers to see what went wrong during the deployment.
To be clear: The kill button is now removed in all SAP HANA Cloud environments (Trial, Free Tier and Production)