Cannot connect to AG name

Hi!

I have a 2 node SQL 2014 Always On AG group.
It has 1 database in it and fails over fine.
I can can connect to the instance using the instance name of the node, but not with the AG-Group name..  All other AGs in the business allow me to connect to the instance using the AG name. Any idea what I need to do to allow this as I want the application to use the AG name so that it does not matter what node is primary..

Thanks,
Zoe