Everything appears to be working fine for me. I send a counter value every second to OF in the test patch. I'm opening the example, starting Music I/O, and getting the patch audio and counter messages correctly the whole time. This is on an iPad 2 running iOS 8.
Are you opening a new patch later on after opening the patch or are the messages you're not receiving being sent from the patch initially loaded when starting your app? My initial patch is sending things to OF just fine.