If you can figure out what is the problem... I had a similarly frustrating experience on why my simple blog was banned... probably around the same year as you.

If you can figure out what is the problem... I had a similarly frustrating experience on why my simple blog was banned... probably around the same year as you. It's pretty rich that Google post claims that it is increasing transparency. Still sounds very opaque. The URL they gave was the home page and they wouldn't provide any specific information. I was already banned. The only theories I had at the time was related to the very international traffic of my blog. As WordPress developer very active in the community I had a lot of international traffic and some of it was trying all types of strange hacks on my site. I used it as a bit of a honeypot. I couldn't find any specific traffic that made sense so. My other theory had me blaming CloudFlare, who at the time, and undocumented, would throw up ads if the traffic seemed suspicious. The only way I found out about that was thanks to an Eastern European coworker, who let me know. Though that post makes it sounded like that blog might not have been banned for life like the emails from Google at the time implied. I could have likely used my own network of Google friends to get more clues, but the ad revenue was a trickle and I really only had it on to test the related WordPress plugins and to experience the same interfaces and workflows as my customers. It wasn't worth anyone's time.