In some cases you need to delete the phone from the other bluetooth device's history. Also ensure that you have the device in pairing mode that you are attempting to connect to.
Mark
Motorola Support
Re: AT&T Moto X Lollipop update today and now my contacts are gone, please help How can I get them b
Dan-
Glad you got to L2 and got it worked out. A factory reset shouldn't be necessary. I have posted some instructions on our community but I'm under 10 links so I can't post that for you...
Can you please list your Bluetooth Devices you are using with your phone?
Please also set your device to connect with 5 GHz only on your phone (Motorola Support)
Mark
Motorola Social Support