Acquisition Data - Not displaying , no data (across entire analytics account)

Evening folks,

Hope somebody can point me in the right direction- recently all of the properties inside my Analytics account have stopped displaying the pie chart and channel data in the acquisition tab (see screenshot attached). I'm sure I've done this myself by accident, can somebody tell me what I've done and how to reverse it?

from Google Analytics http://ift.tt/1K1dndy
via IFTTT
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