Stopped working after 3.5 months

I set up the extender successfully. I was unhappy that it does not allow parent controls, but decided not to return it. However, after 3.5 months it stopped recognizing the internet connection even though I plugged it in right by the router. The company did not respond to an email and I am not sure how else to get a response from them. I will have to purchase a replacement if I cannot get any response from them.

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