I bought this two pack of door sensor. The first one was a breeze to link to the app and works great. The second one is a different story. No matter which linking method I followed the unit would not connect, suggesting that the unit is defective.
I contacted tech support but those guys at Merkury, the maker of the Geeni product line, are useless. They send me email telling me to check links they never attached to the email and when I reply to their email I get nothing in return. This has nothing to do with the provider of the item as they are not the ones taking care of tech support (at least I hope so). Since the first sensor has been installed I don't really want to take it down to return the whole thing and I don't know how I could get 鶹 (who is the one fulfilling the order for the reseller) to only send me a single replacement unit. It is unfortunate though that the reseller has to Get such a review because of the incompetence of Merkury's tech support.
I should be use to this because Merkury has done the same with a doorbell camera I have problems with. They only answer one email and after this you never hear from them again.