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Dead Yeast check expectation date. When you did your "30 min starter" was there foaming? If not it's likely the yeast was dead. "80°C" will kill yeast. If you added your yeast to 176°F cider, it's dead. Repitch your cider. Providing that was a typo, here's some other possibilities. Bad Fermentor Seal if there is a bad seal, the air lock won't function ...
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