ActuallyOriginally, you are addingI was mistaken and @Max steered me in the right direction. Thanks @Max!! Forever grateful! I apologize in advance for the error and confusion.
You do want to pick just one official version of any page. If both are the same with the exception of beinglink your desktop orpages to your mobile then I suggest choosing the desktop content, assuming it existed first, and use the
<link rel="canonical" href="desktop.example.com/original-page.html">
on all pages tailoredwith canonical links. However, you have to link each page specifically one-by-one- desktop pointing to the corresponding page between the desktop and mobile pointing to desktopversions.
While this is a problem that you need to fix, it only confuses search engines- not users who may never actually see this tag.From mobile:
From desktop:
I still fear that it has nothing to do with your RPM reaching $0 which is a function of clicks on ads served. I suspect there has to be something else fundamentally wrong- and likely something insanely simple to fix. Hopefully, this is the answer. I know you have been fighting this battle for a while. I would like to see you find the answer soon. (that is always the way you know... we dance around with big stuff for weeks then it dawns on us what is actually wrong and wha-la! a marvel! too embarrassed to admit or celebrate- but we quietly have a beer anyway. chin-up! you are due for a breakthrough.)