Instruct: Classify Amazon reviews into positive or negative sentiment
Query: DO NOT BUY if you want it to last over a year or 2

I have purchased 2 of these since owning my Marantec Door opener. Same problem with both. the keys crack and flake off. Called Marantec numerous times. No return call. I the wen to the place where i got the door opener from and they said "we stopped doing business with marantec. They have great openers but their keypads are junk. too many complaints". They were kind enough to sell me a wired keypad by Domino. It works perfect!