Zwift not downloading, Mac Big Sur 11.2.3

I’ve been running Zwift for a few years with no problem. Last week the app would not launch on my MacBook Pro. I have deleted the app and tried to download the latest but it will not download? I’m all up to date with he latest versions.
Any obvious errors my end or thoughts that can help?

Check Zwift has full permissions to write to your storage. Apparently this can change after MacOS updates, for security purposes.