blogspot does not show adsense ads on mobile devices?

recently, i found that my blogspot website does not show adsense ads on my phone, i did not know why, so i search this issue on google.com, now let me tell you how to fix it.

the answer is simple:
every time after you have edited your theme's html code, then your blog posts' ads setting will be changed automatically, is this one bug?

the solution also is simple:
your blogspot dashboard
layout
blog posts gadget, edit it
Show Ads Between Posts
save it

then you will find your blogger website again shows ads on your mobile devices.