I'm sorry to hear about the missing Rewards interface. I see that this may be disabled, as core (legacy) status levels is enabled and is not supported at this time with Rewards:
I've disabled this for you in the interim, but the Rewards issue should not (cannot) be turned off in Jive Cloud 2015.3. Since this will require further in-depth analysis, please submit a support case in your Jive Community customer group for direct troubleshooting. If you're not familiar with the case submission process, please reach out to your community manager.