Hi,
Here is the link for known issue, where you can include your email address to receive notification, once the issue has been fixed:
https://ttlc.intuit.com/turbotax-support/en-us/help-article/other-articles/turbotax-cd-download-mac-...
In meantime, workaround: update the mac to macOS 12 (Monterey) or macOS 13 (Ventura), if possible.
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