Hello!
If you exceed your Auth0 MAU quota for three consecutive months on a paid plan like B2C-Essentials, Auth0 will automatically upgrade your subscription, typically to a higher MAU tier within your current plan to accommodate increased usage. A jump to a higher feature-set plan like Professional is possible if your MAU significantly exceeds current plan thresholds or necessitates its features. It’s always best to monitor usage and proactively contact Auth0 sales for clarity and cost-effective solutions.