I have had somewhat similar experience (as have many others). My suspicion would be that the site is explicitly, manually banned by some person at Google. The

I have had somewhat similar experience (as have many others). My suspicion would be that the site is explicitly, manually banned by some person at Google. There is nothing to do about it except maybe start over with a new domain name, new server, preferably not under your own name (what name the domain name is registered under). Short of that: Maybe implement Google Amp, Analytics etc ... but probably too late for that.