Not being prompted for root access on step 16 Kiran Kumar instruction

[nkznkz]

Hi eveytone. I have one issue with Carstream and I hope you can help me :)
My version of carstream is 2.0.1 and AA 5.2.501054 on my Samsung A5 SM-A520F.
I used instruction Kiran Kumar but for point 16 I have no prompt for root access on my mobile.
And more, my Carstream is not running on desktop-head-unit. The screen looks like on the picture.:

I tried to find some settings for Magisk and I have looked at log from Magisk and there is no anything about connecton like com.google.android.gms.car related to carstream.
Does it mean there is no request for root access.
How to make progress with it?

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O would like to add, AA Mirror requested root access during first start and it's working fine.
So,
I uninstalled version 2.0.1 and installed 2.0.0. Then I could see opton "Unlock [Root}" what was not exist in v2.0.1.

I used this option one time and then I got request for root access! After restart of mobil I could see access to root for Carstream in the Magisk as on the picture but Carstream still doesn't work on Desctop Head Unit.