Hey there, thanks for reaching out and welcome to the Streamlit community! 
That error—“Your account has exceeded the fair-use limits and was blocked by the system. Code: 403”—means your Streamlit Community Cloud account was automatically blocked for exceeding resource or fair-use limits. This can happen if your app uses too much memory, CPU, or storage, or sometimes due to a false positive, even for new users or first deployments.
To resolve this, you need to open a support ticket and include your GitHub username. The Streamlit team will review your case and help unblock your account if appropriate. You can find the step-by-step process in the official docs: How to submit a support case for Streamlit Community Cloud and Login attempt to Streamlit Community Cloud fails with error 403. If you’d like help optimizing your app to avoid future blocks, please share a minimum reproducible example or your repo link so the community can jump in with tips! Community members—feel free to share your experiences or advice!
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