If you can read this page, Cloudflare is serving the M002 Big Stage package. This page works even if the 3D engine cannot start.
Open the Dance Academy M002 big-stage build
If the main game is still blank, press Copy report or send Chap a screenshot of these results. Clearing the old offline cache does not delete your saved dancer/routine Vault, but Safari website data clearing would.
Preparing diagnostics…Safety: this page neither changes the Windows Academy nor deletes localStorage saves.