Bests & Worsts Reviews from Amazon

It was ok to install (god forbid things are't 100% lined up) and dog was 90% trained to use it... then winter came. Door is a waste of money.. As soon as it got cold (we are in midwest) door malfunctioned. locked unlocked on its own. We changed batteries, did ALL the troubleshooting, only to find that the hinge on the door has frost on it. Keeps resetting and needing to relearn. Very slow and sluggish. This product does NOT do well with cold and has been rendered useless. It would be nice for company to respond with some options, as we have not even had it installed for 4 months.