Two strands ordered, both don't light up!

I contacted the seller and will update this once they respond...if they do. I ordered two strands of lights. On the first one, the last 3 feet didn't light up. This was annoying, but I was planning to hide that portion of the lights anyway. On the second strand, ONLY the first 6 feet lit up. That means almost 90 feet DIDN'T.

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