According to my interaction with Google employees, Google has around 200 factors on which it passes the accounts as eligible for adverts. It is much more complex now.
Google has all sort of finger printing data on you and your devices. They also classify these threshold accounts as high risk accounts and their Algos have some internal configurations where they give some sort of rating to the account.
So sometimes even if you completely change the devices, emails and ips, still you get suspensions.
They also know he normal user behavior from device perspective. From the normal user perspective. No new user uses threshold accounts. They all come in a normal way. Something would be tying you up from the previous violations. If nothing is doing that, still Google sometimes does not allow new advertisers in the same sub niche which is seeing massive violations. They think and know that the same advertisers are coming back again with new accounts. Since they are a big company and have monopoly they donot care what we think or sometimes what innocent/unrelated businesses think.
In my opinion, you need a small break.