Echoing Mike's suggestion, if you are using D2L (Brightspace) with WeBWorK, I recommend not using any form of conditional release for accessing the WeBWorK set in D2L (which maybe you are not doing anyway, but it's worth repeating).
That includes restricted dates. Because WeBWorK is already restricting ability to submit for credit by the due date, and if D2L is doing that too, the restrictions can clash. Some inconsistency could lead to a very confusing situation for a student.
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homework set question
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