Contacts won't sync over bluetooth

I am having trouble getting my car stereo syncing my contacts/call logs with my phone.

I have stock rooted 6.0 I flashed myself, and all works very well. I just installed a 2016 kenwood head unit - calling and bluetooth audio work fine with the phone except the actual phone info screen on the head unit.

When you go to the phone info screen on the head unit, it tries to connect to my G3 and download calls and phone book. at this point, most phones pop a little dialog saying "would you like to give permission to device to access your phone contacts/logs, etc". My G3 does not do that.

I tried a Samsung phone running stock 6.0.1 and it popped up the dialog, and the head unit worked as desired. It must be the G3 and/or software issue.

Any one know of a trick or permissions I can edit to get it to allow.

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