Comment (by Roland Haas):

Hello Jose, unfortunately the ET maintainers have no more insight into the Bitbucket issue than you, since we just use the public services.

Looking at the status page (linked in the yellow banner on top of the screen):

https://bitbucket.status.atlassian.com/incidents/6lzhx12yy2bt

Atlassian says the issue has been resolved and indeed it seems to work fine for me right now.
Downdetector https://downdetector.com/status/bitbucket/ also seems to show that things are back to normal.

Please try downloading again, and hopefully things will work.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2865/inquiry-about-service-downtime