Hey there, we've checked and see that you have access to the Community Tab on your channel. Could you try uninstalling the YouTube app, restarting your device and reinstalling the app? Let us know if this helps.
Oops! Sorry for the confusion there. Community tab is currently available only on iPhone and not iPads. Let us know if you have any troubles accessing it on any of our supported devices listed here: https://goo.gl/CNfyZr