I to update a iPad 4 to ios11.0

What iPad do you have? If it's on the minimum required list of apple for iOS 10 you can simply use the system settings app to search for updates and get the updated iOS.
iOS 10 Wikipedia

Hey Janie,
We (Fixya) have no way to update ANYTHING... You must do this on your own, sorry..

Update the iOS software on your iPhone iPad and iPod touch

I've had the same thing happen to me. Some of my apps are no longer available.Unless apps are continually updated, they may be left by the wayside. I heard that Apple gave many warnings to app developers to update them before IOS 11 but many just left them there not updated for 2 years.It looks like the app you mentioned had not been updated since Dec 2011. You make consider other apps that are available to help keep your credit info safe. Banks and other credit establishments have pretty good secure apps that encrypt your numbers, purchases and personal info.
I have heard that some people may try to go back to IOS 10 ( to get some of the apps that may still be up available on their iCloud or computer) but I think it only works on older iPhones and/or iPads. Hope that helps.

Hi Deborah,
Hulu on the App Store

The link above will take you to the app in iTunes or App Store. If you receive an error stating you cannot download because you need to update, that may be your only option. By the model listed above I'm thinking your tablet is very new so you should have little trouble updating your iPad.

I will leave a link below describing how to update your iPad (link takes you to Apple Help).
Update the iOS software on your iPhone iPad and iPod touch

I hope this find you well,
Niall

Possibly one app is locking up networking... My gf had this problem after ios update to 8.0. It turned out facebook app became messed up. I uninstalked facebook and everything was great. Reinstalled facebook and it worked fine after that...In fact her whole ipad got faster... IOS updates are becoming painful...

Unfortunately you can only update to 5.1.1 for the ipad1

Yes, you can. The easiest way is to update the iOS system in the Settings app. Also you can resort to iTunes to do that. Follow the instruction below.

If you can't update iPhone iOS software wirelessly throug WiFi connection, you could give iTunes a try. As the all-inclusive iOS device manager center, iTunes provides multiple effective assistances for you, including: backing up iOS devices, restoring iOS devices, transferring iOS data files, and updating iOS devices. You could follow the below steps to learn how to update iPhone software with iTunes in detail:

1. Install the latest version of iTunes on your computer.
2. Connect your iPhone to your computer via the USB cable.
3. Open iTunes and select your device.
4. Click "Summary > Check for Update".
5. Once iTunes detects the available update, click "Download and Update".
6. If asked, enter your passcode. Then iTunes would start to update iPhone iOS software. When it's finished, disconnect your iPhone with computer.

For more methods, check: How to Update iPhone

there are some core apps belonging to the iOS system and cannot be deleted like 'clock', 'calendar', 'contacts', 'facebook' etc.
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core apps:
1) Airdrop
2) Apple Store
3) calendar
4) camera
5) clock
6) contacts
7) facebook
8) game center
9) iBooks
10) iTunes
11) mail
12) maps
13) messages
14) music
15) newsstand
16) notes
17) photo booth
18) photos
19) reminders
20) safari
21) settings
22) siri
23) tips
24) touch ID
25) videos