Is your router set to reboot automatically on certain days of week? Sometimes my iPad will not connect automatically after router reboot.

I certainly don't know that it has special reboots. We have more power outages than most, but that hadn't caused problems before. I will include a router reset in my testing, but it may take some time with so many potential issues.

Home routers shouldn't need a regularly scheduled reboot. On the other hand, the power spikes and surges that often accompany system off and on power events that you say you experience can take a toll on electronic circuitry. Routers and modems seem to be frequent victims of such events.

If other devices in your home can keep ongoing wifi connections, that would suggest the problem is the ipad instead.

Going to the Apple forums is a good idea. You might even need to go to an Apple store. I know the IOS upgrade has been troublesome for some, I've intentionally avoided triggering it on our ipad.

Have you rebooted the iPad? To do that, hold down the power button until you get the option to turn it off (slide). Wait a minute or so and then hold down the power button until the Apple logo appears.

If you're not sure if you are connected via WiFi, turn off cellular data in Settings and then try to browse the Internet.

The password still showing seems odd. I would try a reboot if you haven't already. You might also tell the iPad to "forget" your WiFi network and then connect again entering the SSID and password.

Does the iPad work over other WiFi networks? Try a neighbor, McDonald's, Starbucks, etc.

Thanks mike. I guess I should have said 'reboot' in my initial post rather than restart. Yes, I rebooted several times to get the opportunity to enter the security password. This pad does not have cellular capability so when wi fi is gone, it is disconnected. It certainly used to connect to other networks, but I haven't checked lately.

I was beginning to think that the pad was retaining wifi connection, but today it is again back to disconnected, still with the blue check indicating that it is connected. The only difference from several days ago, is that the password on 'client ID' is still showing. I had assumed that the showing password was somehow involved in the wifi retention.

I have considered 'forget your WiFi', but I don't know where to get the ssid. I suppose it is built in but I don't understand this stuff that well.

Edit for addition: OK, I got brave (or could have been stupid) and 'forgot the network' and at least for the time being, the pad is reconnected. It was easy to reconnect because my regular network was still waiting for me to re choose it and it immediately asked for the password and I was properly connected. The password isn't showing in 'client ID'. Perhaps it was never the appropriate place to add it anyway!? I do see a couple of possible differences in the settings that I wrote down if things didn't work. There may have been a difference in the DNS setting (whatever that is) (or it might have been a hand written typo on my part) but the new setting's last 7 chars are now 171.2.226 and I scribed 172.2.226. And under the area of HTTP Proxy (whatever that is), OFF is highlighted, and before there was a space below where it said URL. Was it waiting for some website?

So, for the time being, things are in order. It took 2.5 days to lose the network the last time, so we'll see.?!

Good job Chas!

Going forward the SSID is your home network name. I'm guessing that it's 'client ID'
The network settings DNS server is probably managed by your router and you probably don't have an http proxy, those are typically used to bypass a network's hardware firewall.

It was easy to reconnect because my regular network was still waiting
for me to re choose it and it immediately asked for the password and I
was properly connected.

For 99% of home users, that's all you're going to have to do. The other 1% may have to play with the advanced settings but if you don't know what they mean, you don't need to use them.

The next step after rebooting (or resetting) an iPad (or iPhone, or iTouch) is restore.

If you're having connectivity issues, it's also not a bad idea to unplug the router for a couple of minutes. If you happen to have a separate modem and router, unplug both. Then power up the modem fully, followed by the router.

Sorry to direct you somewhere else but looks like this might be a common problem. I saw this for iOS 8.1.1 and iOS 8.2. iOS 8.2 Dropping Connections