Need Help Fixing My Post Submission Error on Indie Hackers?

Hey guys, how are you doing today? 👋

I'm trying to write a post about digital TV and how it compares to traditional cable TV, but whenever I try to submit it, I get this error:

"Sorry, you're not allowed to post this."

I've tried submitting the post both with and without a URL, but I still get the same error.

I've seen other people publish similar articles without any issues, so I'm not sure what's causing this.

Has anyone experienced the same problem or found a solution? I'd really appreciate any help or advice. Thanks! 🙏