My phone keeps asking me to setup Unlock with "OK Google" even though I've set it up.

My phone keeps asking me to setup Unlock with "OK Google" even though I've set it up. The first time I was prompted I clicked into it, confirmed with "Yes I'm in", confirmed my pattern and then I found that it was set to "Always On" with "Trusted Voice" set.

I've attached images to show the issue.

I have a Nexus 6P running Android 7.0

Does anybody know how to stop my phone asking me to do this?

Attached Images

• 2017-02-10 09.41.09.jpg (110.9 KB)
• 2017-02-10 11.25.45.jpg (110.3 KB)
• 2017-02-10 11.25.54.jpg (99.5 KB)