If your website is not malicious, but you still receive a warning from Facebook. We will suggest you get more information from Facebook. The reason may be that: some words in your post have been banned or your domain has not been approved on Facebook.
If you are already blocked by Facebook, it will most probably be banned by PicSee AI Detector. The better way is to buy a higher-level Branded Short Subdomain (BSD), and it can be passed on to Facebook.