If your are not Sure about Auto Ads then it is a Code by Google Adsense which you have to put in your sites <head>. After you add it the code then it will manage where it has to place ads on your site, which will generate good revenue. Before Auto Ads was introduced Hosts had to put Ad codes manually on your site which showed ads specifically only at the places where contributors added the code. Manual code addition is still available but Google recommends using Auto Ads.
Many people are complaining about Auto Ads not working on their specific device and with me they are working fine on Cell Phone / Mobiles but not on my Desktop or Laptop.
At first i thought it happened due to all my new setup of site sufistech.com but when i checked my other sites on same Adsense account, even they were reacting the same way. Before this my sites were showing ads perfectly but this happened suddenly without any warning or change on them.
I tried to fix this by closing Auto Ads and putting a Custom Ad Code on my sites but again they were showing on cell phones but not on my Laptop.
After getting support of Google and talking to those who faced this issue, i came to a conclusion that it is an issue on Google Adsense site and has nothing to do with our themes and Codes. But to be sure, I am going to tell you to check if your Auto Ads are working and placing code perfectly on your site. Solution to bring back Ads is just to wait and it takes 3 to 4 days and even took 2 weeks to some people and got fixed on its own.