Google AdSense is now sending notifications to site owners about the upcoming changes to Chrome’s adblocking capabilities. Starting July 9, Google will be expanding Chrome’s built-in ad blocking efforts to all other regions and ads will be blocked on sites that have performed abusive behavior. The Better Ads Standards currently lists 12 ad experiences that are considered to be particularly annoying to users. Users can continue to see ads on blacklisted sites by disabling the feature in Settings. To unblock ads on abusive sites, users would need to toggle the setting for “Blocked on Sites that show intrusive or misleading ads (recommended)”” to “”Allowed”””
Source: https://www.bleepingcomputer.com/news/google/google-adsense-warns-that-chrome-to-block-abusive-ads-on-july-9/