I dont find the delete selection
You can’t delete a thread without PMing @TReKiE, which is Discourse’s fault.
just click the … button and click the rubbish can.
To clarify the confusion, you can’t delete a topic, but you can delete replies if it’s still within the editing period (which is 60 days at the moment):
You can always flag your own topic and indicate why you want it deleted in the
Something Else box.