Deleting one item from reminders window

I cannot see how to delete one reminder from the pop up window. I used to be able to do so, but not now. I have the option to remove all, but not a single reminder. 

Hello Ken,

You can snooze/dismiss a single reminder by clicking on the ‘zzz’ (snooze) or the crossed out bell (dismiss) icon next to the task’s name.

Regards,
Maurice

I’ve tried your recommendations but no joy.