@Mo
I tested it on iOS7 and there are no problems with Particle Candy that I can see which is good news.
No ads are showing at all, but I get no errors in the log, so I suspect that nobody is willing to show ads for iOS7 yet.
GameCenter crashed on me though, but I don’t think it’s your fault.
Here’s the log if you’re interested:
Sep 12 15:56:07 Devpod-5G SpacecomFree[515] \<Warning\>: Warning: Libinfo call to mDNSResponder on main thread Sep 12 15:56:09 Devpod-5G kernel[0] \<Debug\>: AppleAP3GDL::handleInterrupt2 FIFO is Empty Sep 12 15:56:27 Devpod-5G SpacecomFree[515] \<Warning\>: Warning: Libinfo call to mDNSResponder on main thread Sep 12 15:56:28 Devpod-5G com.apple.facebook.xpc[532] \<Notice\>: 2013-09-12 15:56:28.142|com.apple.facebo|0x14d293e0: SLServiceMain is creating a service listener for com.apple.social.facebook Sep 12 15:56:28 Devpod-5G com.apple.facebook.xpc[532] \<Notice\>: 2013-09-12 15:56:28.167|com.apple.facebo|0x14d293e0: Service with type com.apple.social.facebook session class FBDSession and protocol \<Protocol: 0x3bb18e00\> is accepting connections at listener \<NSXPCListener: 0x14d2a970\> Sep 12 15:56:28 Devpod-5G com.apple.facebook.xpc[532] \<Notice\>: 2013-09-12 15:56:28.235|com.apple.facebo|0x14d32550: New remote session: \<FBDSession: 0x14d32060\> Sep 12 15:56:47 Devpod-5G medialibraryd[159] \<Warning\>: {MediaLibrary} [MediaLibraryService] Cancelling any active or suspended import operations in progress for process \<unknown process\> (process ID = 528) Sep 12 15:56:47 Devpod-5G medialibraryd[159] \<Warning\>: {MediaLibrary} [MLWriter] Cleaning up any remaining transactions for ended process \<unknown process\> (process ID = 528) Sep 12 15:57:39 Devpod-5G GameCenterUIService[518] \<Warning\>: \*\*\* Assertion failure in -[UICollectionView \_endItemAnimations], /SourceCache/UIKit/UIKit-2903.2/UICollectionView.m:3519 Sep 12 15:57:39 Devpod-5G GameCenterUIService[518] \<Error\>: \*\*\* Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'attempt to delete item 99 from section 1 which only contains 75 items before the update' \*\*\* First throw call stack: (0x30d64f53 0x3b00e6af 0x30d64e2d 0x3170c183 0x33696df7 0xb086b 0x318cbebd 0x318cbebd 0x3197a4b9 0x3b4f1d7b 0x3b4f1d67 0x3b4f87c1 0x30d2f821 0x30d2e0f5 0x30c98ce7 0x30c98acb 0x35982283 0x3353aa41 0xbb0d7 0x3b516ab7) Sep 12 15:57:39 Devpod-5G ReportCrash[533] \<Notice\>: ReportCrash acting against PID 518 Sep 12 15:57:39 Devpod-5G coresymbolicationd[534] \<Warning\>: cache does not exist at /private/var/root/Library/Caches/com.apple.coresymbolicationd/11A465, resetting Sep 12 15:57:40 Devpod-5G ReportCrash[533] \<Notice\>: Formulating crash report for process GameCenterUIService[518] Sep 12 15:57:40 Devpod-5G com.apple.launchd[1] (UIKitApplication:com.apple.gamecenter.GameCenterUIService[0xa970][518]) \<Warning\>: (UIKitApplication:com.apple.gamecenter.GameCenterUIService[0xa970]) Job appears to have crashed: Abort trap: 6 Sep 12 15:57:40 Devpod-5G backboardd[28] \<Warning\>: Application 'UIKitApplication:com.apple.gamecenter.GameCenterUIService[0xa970]' exited abnormally with signal 6: Abort trap: 6 Sep 12 15:57:40 Devpod-5G ReportCrash[533] \<Notice\>: Saved crashreport to /var/mobile/Library/Logs/CrashReporter/