I have also registered for the community edition of Cortex XSOAR for my self training purpose. But i haven't got it so far. I have contracted sales as well to help me get the community edition, but still no luck. They should clearly inform if they can give or not so that people dont need to waste their time waiting for them.
Had the same problem, that link-mail never arrives.
I managed to download from this link a colleague gave me:
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