Common issue. First thing to do is to call Acura HandsFreeLink Customer Service at 1.888.528.7876. They will walk you through a diagnostic. Make sure you are NOT calling on the phone that you want to pair
More than likely, you'll be looking at replacement of the HFL control module, just a tick under $200. We sell them at OEM Acura Parts | Acura Parts | Cheap Acura Parts
. If you need help finding the specific part, drop me a message....