Hi there,
My dad recently purchased a 5-in-1 PRO+ Weather
sensor. I was not with him when he set it up, but he was able to see the
station on the app. When he looked at it again, it disappeared. When he
attempts to add the station again, it says the device is already in use. He
purchased it from amazon, and the seller was amazon.com. I think he incorrectly put in the wrong email when he signed up for his account.