iOS 9 & iOS 10 multiplayer help?

My daughter is using an iPad with iOS 9--it is too old to support iOS 10.

I upgraded my iPhone 5 to iOS 10, and as a result lost the Game Center app.

Now we can't play online multiplayer on my worlds anymore. If I invite her, she just gets a text message, and tapping the link in it does nothing.

And as some of you know, we're playing the last build called "Junk Jack X", and won't be upgrading, because my daughter can't bear losing all her stuff.

Is there anything we can do?

[TwelveFoot]

I have no idea, I've never really done multiplayer anyways.

I did find a (non JJ) topic about it, but it's unresolved.
http://apple.stackexchange.com/question ... -and-ios10

This might help, idk.

http://appletoolbox.com/2016/09/where-is-game-center-app-ios10/

My daughter is using an iPad with iOS 9--it is too old to support iOS 10.

I upgraded my iPhone 5 to iOS 10, and as a result lost the Game Center app.

Now we can't play online multiplayer on my worlds anymore. If I invite her, she just gets a text message, and tapping the link in it does nothing.

And as some of you know, we're playing the last build called "Junk Jack X", and won't be upgrading, because my daughter can't bear losing all her stuff.

Is there anything we can do?

She just has to update it.

[TwelveFoot]

She just has to update it.

My daughter is using an iPad with iOS 9--it is too old to support iOS 10.