Not given 15 minute breaks

So I'm in fulfillment, work 8 hours, and in the mytime app it says I get two 15 min breaks and 30 minute meal and the times they start and end, but they have a paper on the bulletin board that has our names and just our 30 minute meal is listed and at a different time than in the app and no 15 minute breaks, what am I supposed to do, I asked another team member and they said they just follow the paper and not the app but didn't say anything about the 15 minute breaks...