I’ve been experiencing the same problem for the past 30 days, and one of my domains has been blocked by Google.
How to solve this issue
I did this setting right now few weeks back.
Unpatched Vulnerability in WordPress Core: What It Really Means (ithemes.com). But i did not recover the domain from the Google block list.
https://transparencyreport.google.com/safe-browsing/search?url=biochemden.com