You seem to have not been logged in for a long time to your Airbitz account, or they have some transitional period in which you can use
both apps. According to the information available on their website Airbitz becomes Edge in October 2017, it's actually a classic rebranding.
Since it is same wallet with only a different name, it would be best to stop using Airbitz and switch to Edge. You will probably get a better user experience and regular updates, which is very important for you coins.
I am not sure can you use both apps at the same time, but that certainly makes no sense...
Airbitz is now Edge!