BC does not allow you to reopen a fiscal year. While the year has not been closed, it does allow you to re-open a period within the year. But once that year is has been closed off, it does not allow you to reopen.
You are still able to do the Run Close Income Statement which will create a journal. You should be able to post corrections there.
You can read about it in the forum accessible via the link below (scroll down to the green tick which is the verified answer):
Reopen Fiscal Year after accidentally closing it