How can I get rid of 11.0.3 upgrade , it has wreaked holy hell with my iPad mini, cannot. Even find where it is usually listed.

Connect iPad via Wi-Fi

1. Connect your iPad or iPad mini to your computer.
2. In iTunes, when your tablet appears in the Devices list, click it. ...
3. In the Summary tab, select the Sync with this iPad over Wi-Fi check box.
4. Click Apply. ...
5. Click Done.
6. Disconnect your iPad or iPad mini.

go to settings

general

software update see if there is a update available

Typically, Apple doesn't allow you to downgrade the iOS to a prior version. It may allow downgrading during the first week or two after an updated iOS version has been released. After that, you are stuck with the version you have ... eventually being forced to upgrade to a later version for compatibility.

see if this link helps you out. My iPad 2 wont accept the upgrade to 11 03 Google Search

Try to contact the game administrator.
it's the only way

if you have laptop/desktop computer you can sync the iPad with iTunes and download iOS 8.1.2 there:
Upgrading iPad to iOS 8: Through iTunes 1. Backup your iPad
Open iTunes. Select your iPad in iTunes and click Back Up Now.
2. Restart your iPad and your Computer
3. Download and Install the Update
Go to iTunes -> Select iPad -> Check for Update -> Click Download and Update

Whichever method you choose, the process will take quite some time to work depending on how much free storage you have on your iPad, your internet connection, and how Apple's servers are doing with upgrades. Occasionally, Apple will either not let you download the upgrade or it will fail. For iOS 8, you must have an iPad 3 or newer. This does not work with the original iPad - if something goes wrong, restart your device, and try again.

How to Upgrade to iOS 7 on an iPad or iPad Mini
How to Install iOS 8 When Your Device is Low on Storage

Go in to your general settings. Down at the bottom is a reset button- follow it to the options. One of the first listed from the bottom is a keyboard reset

Did you mean that the iPad is disabled for many attempts of passcode? Usually, waiting for a particular time span can enable agin the iPad. But if does not enable back again even after a few hours, then consider restoring your iPad in iTunes.

Did you set up a password for the router? If you did not, then check on the user manual what default password the router has. Usually its 1234 or 12345678 or even a lot of numbers. Consider the back or bottom part of the router device. Sometimes manufacturers put the default passwords there.