Hi @queeneve,
Thanks for reaching out and wow, congratulations to this significant boost of your income.
I cannot imagine any Google policy violations when you embed Auto Ads. Here, you can find more information about the AdSense policy and how to violate it. If you connect Advanced Ads with AdSense, you will see all warnings (if those appear) in your WP dashboard. Alternatively, you can navigate to your AdSense account > Policy Center to check if there are any warnings.
If you are curious about how you could gain your earnings, I recommend digging into your AdSense reports. I prepared an extensive tutorial about the AdSense reports that explains all the metrics you will see there.
Without knowing your website, I guess that you had a massive traffic boost. I would check the reports to find out, which metrics increased dramatically, e.g., the ad impressions, the RPM of your pages, or the number of clicks.
In any case, you should not be worried, but rather be happy about this trend and find out what caused it and whether you can push it further. During the last months, many publishers complained about decreasing revenues.
Best regards,
Joachim