Unless you are on corporate/BES, then anything to do with Enterprise is something you should be avoiding entirely. Plus, that screen has to do with email, not BBM. So I'm quite lost as well, since you have multiple different topics all jumbled together there.
What I'd suggest you do is first contact your mobile service provider and ensure a two things:
1) That your specific BB model number is specifically and fully supported on their network for all BB-proprietary services...if it's not, then you likely should just stop and re-think what you are attempting to do.
2) If your BB model number is fully supported, ensure that you are subscribed, from your carrier, to a data plan that is adequate to enable the various services you desire to use. All BB services are delivered as part of a service plan from the carrier...so you must subscribe to the services in order to use them.
Occam's Razor nearly always applies when troubleshooting technology issues!
New to the Community? Click here and also here for helpful guidance. Also please click here for additional helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions. If anyone has been helpful to you, please show your appreciation by clicking the button. Need a reference to BB10 OS/SR versions? Click here. Need a specific BB10 AutoLoader? Send me a private message.