I'm still thinking its your path to application that is not kicking off the huge download ~30 GB). See other MBP that were successful.
Try this
Open terminal
type xattr -c (with a space after the letter c)
Once you have the text in the Terminal, just drag your PoE app to the Terminal window and then press Enter.
That is a another way to use terminal for making a path to the application
Done the drag the app to the terminal window then pressed enter method, click on app, Path of Exile application it does a 27.4 MB download then fails with this error.....
Path of Exile quit unexpectedly
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