"The first three steps of the week challenge are the same for everyone. The fourth step is the same in content, but there is a time limit for levels 40 and above of 32 hours, which is impossible to comply with. The overall reward of 5 does not cover the costs of the Kitchenware Store that needs to be bought for 9"
For levels 40 and above, step 4 needs to finished within 32h. As the total recipe time is 2 times 2 hours, 2 times 8 hours and 1 time 12h = 32h this will be a challenge.
It would be advised to start one of the recipes directly after the Kitchenware Store is finished to gain some time.