So last week my mum was staying and wanted to connect to my WiFi. I typed the password into her iPad but it wouldn't connect. I logged in to the Router settings and noticed that the password was different - I hadn't changed it, it appeared to have changed itself?! But everything previously connected had still worked.
I copied the "new" password from there in to her iPad and it still didn't connect so I switched on the Guest network and it then connected for her.
I think I changed it again and then reconnected all our devices and have been using it with no issues but have notice this morning the printer isn't connected to the network (I'm currently trying and failing to reconnect it).
And now I've noticed this message on my phone, which I don't think I've seen before....
Should I worry? What's going on?
was it the default admin login? might be someone has hijacked it remotely, and old devices were set up with WPS? Not sure if WPS handles password changes or not..
No it's not the default.
The printer was probably set up with WPS, the phones etc weren't.
Googling that provacy warning shows this;
https://www.iphonetricks.org/how-to-fix-wifi-privacy-warning-on-iphone/
It doesn't explain everything you've described, but might help you get beyond where you are.