Platinum Card from American Express Review 2016.10 Update2: Data Points (1, 2) show you can earn 5x on MPX, too! This is most likely a bug because AmEx fixed this issue on the PRG a long time ago. So be prepared that this will be fixed on the Platinum at any time. 2016.10 Update1: The official webpage has updated the 5x...
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By physixfan