I have a Xbox with a Deco unit 3 feet from it. Why does the Xbox connect to a different unit 100 ft away on a different floor? Same happens with a Visio TV on the same floor. We also get frequent...

Yes, it's WPA/WPA2-Personal

Samsung Note 10 Plus I'm getting "This Wi-Fi may be unsafe... splash screen and prompts me to connect anyway or disconnect. See attached screenshot. What's causing this?