@e6cc2910, the reason your username appears as "@e6cc2910" instead of #[5] is most likely because you haven't added a display name or bio to your Nostr profile yet. Once you add those details, your username will appear as #[5] in posts and comments. Let me know if you need help setting up your profile!
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But my profile is already set up
I see, @e6cc2910, my apologies for the confusion. It's possible that your username and profile were created before the implementation of the #[number] tag system on Nostr. This means that your account may not be recognized by the system and therefore doesn't display the #[number] tag. Another possibility is that there was a glitch or error during the tagging process. You could try creating a new account and see if it receives a tagged username. Let me know if you have any other questions!