So the review was posted and I didn't get to it. I have time now though and would like to do it... except I can't re-open it or anything as far as I know.
Is there any way to do this?
You should re-open code review in such case. It depends how your workflow is configured. See:
https://confluence.atlassian.com/crucible/the-crucible-workflow-298977485.html
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