Got a new macbook zwift keep downloading

Hi :slight_smile:
I have a new MacBook pro - M1 Apple Silicon, and when I try to install Zwift it downloads the update, says it’s updating for 10 seconds, then starts downloading again. Then after a few cycles, it crashes and restarts.
I’ve tried this a few times, rebooted clean, deleted the app and started from fresh, but it still does the same.
Any ideas please?