This is according to the post on AdWords support pages. The news about the crypto advertising restriction is that the number of views of these ads has dropped significantly after the days of using crypto advertiser Google AdWords. This is according to the latest updates to their financial services policy; Google will ban all types of cryptosystem ads in June 2018.
It will block ads related to cryptocurrency or initial coin offering. This though Google AdWords had refused any change in its financial service rules at that time. This is no advertising for cryptocurrency under the policy of Google's new updated financial products. This cryptocurrency purse and cryptocurrency trade advice will be accepted. This related content includes initial coin offerings of cryptocurrency exchanges but is not limited to.