Hello 温啟良 and Lawrence! You are perfectly right. The situation is as follows: some projects in free trial have been billed and charges are going to be returned to the affected Clients. Google Cloud Status Dashboard displays a warning to this effect. The "Google Cloud Platform Billing Support" provides the same information. If you are in this situation, the erroneous charges will be refunded to you.
Lawrence: what is the project name affected by unjustified charges and at what moment? You can provide this information in confidence via email. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/6c754605-8078-4964-9e36-33d6ca448c6f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.