The teacher set the time in the quiz settings for a futere date:
This quiz opened at Thursday, 13 May 2021, 5:00 PM
This quiz will close on Friday, 14 May 2021, 11:59 PM.
The student get this when he wants to answer the quiz:
Attempts allowed: 1
This quiz closed on Sunday, 27 December 2020, 1:57 AM
moodle3.9.1