You are only eligible for the discount reward if you complete the required number of slashes in a given time period. In case you exceed the time period, you will not get the reward. I have completed the number of slashes in the given time period, but I am not getting the discount reward. Hi5 has a limited inventory of the products at a given time period. In case the inventory of your selected product has stocked out, you will not be able to win the reward even in case you have completed the number of slashes in the given time period.