Old iPad keeps turning up with "incorrect password" to wifi network it previously had no problem joining
I have an old iPad 3, I believe it is. I've had it for like a decade. It's slow but still works. Now it suddenly won't connect to wifi, claiming the password is wrong for a network it normally has no problem joining. The password is correct, because it works with my other devices, Apple and non-Apple. I've reset the network settings on the iPad, and also restarted it, as well as made it forget the network. Still says "incorrect password" when I try to join. Any ideas? It this because the iPad is so old its firmware/software is becoming outdated and simply can't keep up? I haven't manually updated the wifi router or changed its settings, but maybe it has done so automatically?
iPad, iOS 9
