Chromebook - Safe Browsing Scanner vs Browser Guard Confusion

[Caped1]

I have 2 Chromebooks with Malwarebytes Premium installed.  Safe Browsing Scanner is turned on in my older Chromebook.  SBS was toggled off in the new Chromebook and I couldn't turn it on.  I was told that SBS was not available for Chromebooks and that I should use Browser Guard.  A few days later I was able to turn the toggle switch for SBS to the "On" position in the new Chromebook.  

Today I see a list on a Google webpage "Chrome OS Systems Supporting Android Apps."  My old Chromebook is on the list, but the new one is not.

I put Browser Guard on the old Chromebook, but when I click on Malwarebytes logo between the search bar and the puzzle piece, and then click on "Full Protection" "Device Security" not installed even though Malwarebytes Premium is installed on this Chromebook.

(1) Does SBS work with some Chromebooks and not others depending upon whether or not they are on the "Chrome OS Systems Supporting Android Apps" list?

(2) Why would Browser Guard not recognize that Malwarebytes Premium is installed on a Chromebook?

Thank you.
 

[Porthos]

1 hour ago, Caped1 said:

I put Browser Guard on the old Chromebook, but when I click on Malwarebytes logo between the search bar and the puzzle piece, and then click on "Full Protection" "Device Security" not installed even though Malwarebytes Premium is installed on this Chromebook.

That feature does not work on the Chromebook if I recall.