More than $2,700 has been deducted this month from my earnings at AdSense for invalid traffic. The only new thing about my account this month is that I opened a new website. All that revenue is coming from that new website, but I didn't add this website at my sites section in my adsense account here exactly.
A friend of mine who's an expert in AdSense told me it's because my website isn't added to my sites list at my AdSense account. I'm not sure what to do — I want to be 100% sure that this is the reason. Is my friend correct. If so, can I ask AdSense to add this money back to my account? How would I make that request?