Unifi WiFi anomaly

So i have 3 networks setup (LAN, IoT, Guest) with 3 SSIDs accordingly. Recently i’ve noticed that a couple amazon devices will jump from the IoT SSID that i manually added them all on to the LAN SSID. I’ve tinkered and read ubiquiti support but i can find no rhyme or reason why they do it. Sometimes i’ll click on “reconnect” (usually a couple times) and they will jump back to IoT one and sometimes it wont. It’s usually a couple of the echo dots and sometimes a firetv stick. Figured i’d give this a shot before posting on ubiquiti support forums.