Just tried this smart plug to control my Christmas lights.  While the unmonitored pass through power works, I cannot get the Smark Kasa app to get past the splash screen on my iPhone and so cannot control the device.  The app will prompt to make sure I give it permission to my local network, which I've done, but after that it stays stuck on the Kasa logo screen.  I'm on an iPhone 11, iOS 18.11.  I've tried restarting the phone, going airplane mode and back, making sure all other background apps are off, not on VPN, restarted my router, nothing works.  My NetGear Nighthawk router has both 2.4 and 5GHz operating and is fine with the many other devices on the network.  It is not blocking any devices that I can see.  Please let me know what else I can try.  I bought two of these smart plugs last year and am hoping I didn't waste my money.  Thank you.