I just did a test and it worked fine for me. So you received the result message with "Release ID", and after this typing last did not show your release? It shows only the last 5. If after you another 5 releases are done, it will not be shown.
Could you try again and check if it works?
I don't see you doing something wrong. But if the command ends directly after you enter the version, it means it failed for some reason.
What browser are you using?
Could you check the console for errors? And the network tab for the request?
Also, if you want to help me debug this further - may you use the "contact" command in the site?