After beating the game, this is the only achievement that did not unlock. Would it be possible to retroactively check for the amount of claps in the post game area?

After doing the first 10,000 claps and being presented with the message saying the game was over, I kept clapping. For a long time. There are new tidbits of story at 11,000 claps and 20,000 claps. Has anyone put in more than 20k to see if there's a "true" ending? The 'story' info you get at 11k and 20k are not worth it, by the way, so I was hoping there was something more and perhaps I was too rash in quitting after clicking for 3 hours....

Hey! I played for the first time yesterday and really enjoyed it. However, after reaching 10,000 claps I'm stuck in the tunnel by the door with the keypad. I went over to inspect it and now it seems I'm stuck in an invisible box. I'd really like to get the final achievement and see how the game ends. Any help you can give with this, I'd be super grateful:)...