My Streamlit Cloud account was blocked (403 fair-use error)

Hi, my Streamlit Cloud app suddenly stopped working and shows this error:

“You do not have access to this app or it does not exist.
Your account has exceeded the fair-use limits and was blocked by the system.
Code: 403”

This is just a personal development project with very small traffic.
I think this block may be a mistake.

Could you please review my account and unblock it?

My app URL:
https://taxnenchor7-n877rmcctfpwz5tyzljib2.streamlit.app

My GitHub repo:

Thank you!