Some users have facing with such notifications : “This assignment has closed. One or more deadlines for this assignment have passed. You will receive an incomplete grade for this assignment.”
But others can apply their answers.
I really dont know how this situation occurs,
I have checed the deadline and its due time is 29 July 2022.
I presume you are referring to Open Response Assessment (ORA). These can be tricky.
Did you edit the ORA after it has already gone live?
Are there more than one ORA in the same unit?
You have checked the overall deadline date but have you checked the deadline for each individual stage of the ORA to check that the dates are correct there too?