Welcome to the forum.
As the new guy, I will give you this warning: STAY. AWAY. FROM. GROM. (if you search this forum, you'll come across my threads about it

- check YouTube too

). I will trash that company for as long as I live or am involved in the Infiniti world.
Get a USA Spec. Bluetooth is a nice technology when it works, but in my experience it's hit or miss, especially on these older cars as BT firmware improves on phones and hasn't changed in 10 years on the car. I'd get an iPod and pair it with the USA Spec. WAY better.
For the navigation, I've heard of others having this issue over the years but not sure of the remedy off the top of my head.