Thank you for your post about the error you’ve been receiving.
Have you adjusted your E2E tests to fit within the rate limits set in your plan? You should have been receiving the 429 status codes prior to this Access denied response because this view already indicates that the 429 codes have been (dis)missed and you have received the 403 status code (here’s the HTTP status codes doc).
I hope this helps!
PS we appreciate your input and we will be updating our rate limiting documentation ASAP to reflect the Access denied message.