Yes. If students are required to purchase access to WebAssign, there is a 14-day grace period during which students can use WebAssign without completing payment.
When? The grace period begins on the class start state (set by the instructor in the WebAssign system).
What? During the grace period, students can complete coursework and access the FlashPaper eBook. All coursework completed during the grace period will remain in the system and is available to the instructor after the grace period.