This is related to the above question. Since your position on the reward calendar is based on the total number of days that you've logged in, you've actually already claimed the prizes from the days beforehand. In many cases, the prizes may appear to be items that you have not claimed since these were changed in the process of switching to the new system. Simply put, this is the drawback of switching to this new system, but it is working as intended. As you continue along each of the new Daily Login reward calendars, however, you will collect the correct corresponding prizes as you should.