I cannot invade zombie farm everytime i want to invade it goes to loading game and have to wait for another 1 hour plus for the next invade. It very frustrated. Please help.

Just turn of wifi and then you can still have both zombie farms

Personally, I don't have Zombie Farm but chances are that there was a problem when you first downloaded it. Just redownload it from iTunes (it'll be free). Hope this helped!!!

Your app might be corrupted. I would suggest uninstalling and reinstalling, although this might erase your save data.

If there is an update for the app try updating.

I would also search guides for the Zombie Farm such as this guide.

First try doing a hard reset of your iPhone/iPod touch (press and hold the sleep/wake and home buttons for about 10 seconds, until the Apple logo appears).
Another option is to try disabling GameCenter and/or Facebook in the Zombie Farm options menu.

I;m getting this problem as well

ya doosh ya not supposed to open dem ya doosh

That happens to me too! I think it only lets you invade once a day. I only invade once a day; that usually solves the problem. If it doesn't, either keep trying to invade (this actually makes your zombies hungrier!), or check the app store for an update for the app. My problem is a little different; it only started doing that after I invaded with the maximum number of zombies and then lost one in the invasion.

Good luck!!!!!

Check the App Store for an upgrade, if there is not one, then remove the App and then re-download it. If that does not help, on the Apps info page in the App Store, near the bottom there is a button to report a problem/bug, click that and let the maker know about the problem, and what device you are using to play it, along with your iOS version.

I have the exact same problem! and its incredibly irratating considering i have spent alot of money on this game D:

I have no Idea, but for me my iPod does that too. It just exits the game I play and I have to reopen it. Do you guys have an idea