Still I had this problem. If it’s resolved, my adsense revenue will increase alot. Recently we hits 600K pageviews, Discourse is just awesome but still the ads income is poor. 
Are these Pageviews Per day?
All time pageviews. Around 4 months page views.
If you don’t mind the asking, I don’t mind the answering 
For clarity, the pageviews of 600K are they analytics or adsense pagevciew metric?
What kind daily average for one or more: revenue, clicks, impressions or pageviews within adsense?
Yes but like most of Google UI/UX it’s incredibly unintuitive. I really don’t like their interfaces setup at all… but that’s another topic!
Auto ads > (click) NEW URL GROUP
Here you can specify specific URL’s and how the auto-ads appear or not! 
Ok cool, general stats are fine. Like week or month vs revenue.
Well anyhow. I had a look there at our stats for comparison.
April 12 (Pageview Stats)
22,325 - Discourse:
3,970 - G Analytics:
1,910 - Adsense
Never having forum pageviews from previous forum as we do with Discourse, not sure what to make of the massive difference between Discourse Vs Google/Adsense stats. Thus I can not draw no conclusions and only consider is:
A) Uh OH! Something is seriously not working!
B) This is normal, there is a technical explanation.
This is probably getting a bit off topic so to take it back. In my experience, auto-ads once you get them under control don’t always give a great return but it can help with keeping the total a little higher.
You have to observe how they appear. So far they are not so bad in Discourse. The mobile one are often the most invasion with full screen display, these can really annoy users. I generally turn these off.
Thanks for the insight. Can you clarify what is the duration covered for those stats, a week, a month, more/less?
All time i.e, 6 months.
Ok so your page RPM and Impression Rpm are very low. That doesn’t help but impression from our experience is key.
What I’ve found is our page RPM and impressions RPM has gone up since move to Discourse but the impressions have collapsed. Click are down a bit but not as much as impressions.
Red = Page Views
Yellow = Impressions
Pg RPM = Purple
Imp RPM = Blue
.
You can see the point where red/yellow hit the floor, and it hasn’t improved over time. It’s a big problem.
Perhaps we’ll try the other plugin but the only other option that we can see is to migrate to another platform.
You can see here, the Revenue pattern, Before / After Discourse, it’s not hard to tell.
Discourse is a great platform but if like many forums you rely on revenue to pay for maybe the cost to keep a labour of love alive, or actually make a living income from your online forum or website, then you should think very hard before you migrate to Discourse (or any platform for that matter!) until you have tested or are sure you are not going to see a 50-80% drop in your income.
We didn’t really come across this subject until too late, thus post this as a cautionary tale.
We don’t know what it is exactly that causes the problem yet, it’s been suggest it something to do with how discourse server up the pages, but nothing more specific than that!
Time has not solved it, even as user engagement and new signup is all trending in the right direction. Even if you loose 10-15% of your traffic it shouldn’t equate to 50-80% drop in revenue, should it? How then if so?
Yes there are also google whims but in this instance you can clear see the switch over point.
It’s night and day.
Just to focus on the impression point more, since we have the data from before and after, in simple number terms.
3 months Before switch = 2.2M (approx)
3 months Switched = 0.5M (approx)
The strange thing is Discourse gave us better mobile ad serving often where we had zero, and yet the impressions fell off the cliff! 
The question has to be asked:
*What causes Discourse to score such low impressions?
*adsense
How is AdSense measuring pageviews and impressions? Remember that Discourse is a single page app, so how does AdSense count a pageview? How do your ad placements and frequency of ads per page compare with what you’re showing in Discourse?
i think the problem is the Hot Reload, when a page is loaded you also load all the ads, but during surfing these ads are never reloaded, so you have 100 pageviews in Discourse but only 1 impression in Adsense.
Como somos obrigados a inserir o código de Anúncios Automáticos em cada página onde desejamos que eles apareçam, como posso inserir o código de Anúncios Automáticos em todas as páginas do Discourse?
E igualmente importante é o fato de que o código de Anúncios Automáticos tem 16 dígitos 7859204789981798 (não real) (e isso é exatamente o mesmo que meu código de Publicador do AdSense), mas li que o Discourse espera códigos de anúncios de 10 dígitos. Então, para que os Anúncios Automáticos funcionem, como e onde devo usar esse código de 16 dígitos fornecido pelo AdSense Anúncios Automáticos?
Existe alguma maneira de adicionar o código de anúncios do Amp Adsense no Discourse?
Às vezes, os anúncios não aparecem quando clico no próximo tópico. Preciso atualizar a página para vê-los novamente, já que o Discourse é uma SPA.
Quais são suas sugestões?
@Viki Não entendo por que você gostaria de exibir anúncios AMP no Discourse. Você pode explicar?
Porque às vezes os anúncios normais não aparecem quando clico no próximo tópico sem atualizar o navegador, então estou apenas perguntando: os anúncios APM são adequados para SPA?
O Google lançou algum tipo de atualização para os Anúncios Automáticos em outubro, mas ainda parece não fornecer boas demonstrações ou capturas de tela do que esperar. Além disso, de acordo com as notas de lançamento, o código agora pode ser servido por meio de qualquer unidade regular do AdSense, então a integração com o Discourse está agora sem atritos?
Alguém está rodando isso em produção? Eu estaria muito interessado em ver isso ao vivo.