429 happens occasionally without ddos. If you wait 10 seconds and reload and it does not go away, wait a bit longer before retry.
I’m getting 429 when I make my hourly request, and I don’t make any requests outside of that. I’m seeing wider reports of 429 error.
That’s to say my experience does not align with yours.
And before last week it worked just fine.
If it’s not DDoS something has changed.