This is just a small public service announcement to inform users that 1 Host Pro blocks a GoogleAPI subdomain that blocks Google Play Services and subsequently notifications. 1 Host Lite doesn’t have the problem and the issue doesn’t affect devices which aren’t in the 8 series. I was pulling my hair out before I figured out what was the cause of the issue.
Have you considered reporting this to the maintainers of the list?
The list does warn that breakage may occur.