@NickMNS you got white-listed from contacting Adsense recently or from contacting them weeks ago?

When I contacted them they gave me that "brand-safety" email like everyone else and that was it. I haven't contacted them since nor have they contact me. I too have a site with large amounts of URLs but few visits to certain URLs over a period of time.

@kelsheikh
I'm not sure when, but I have been e-mailing back and forth with my rep since I got that initial email. I recommend replying to that email, stating that you have verified everything they suggested and that nothing has improved.

@NickMNS Can I ask if you have third party networks enabled? I enabled them when I started experiencing the issues to try and improve coverage/fill blank ad spaces. Thanks

@ Maleda, I did the opposite, I disabled them when I started having the problem because the only thing I was getting was low quality/spammy ads. Now that things have recovered I re-enabled them. Blocking 3rd part networks made the coverage situation worse to some extent but in my mind it was better to show fewer ads than to show crappy ads that I was going to make money on anyways.

@nichmns 100%

Site 1: Millions pages complex url structure, some site errors, database driven urls - Effected
Site 2: Thousands Pages, Db driven urls, no site errors - Slightly effected then fixed
Site 3 : 800 Pages, Wordpress, no site errors - Not effected
Site 4: 200 Pages, hand created pages, old old cms, - Not Effected
Site 5: Local business, 30 pages, Tested with Ads just to see. Effected for 1 hour then Not Effected

Items done for all effected.

1- Fixed crawl errors (a few hundred on a million page site)
2- Assets architecture with our caching system
3- Provide an Adsense Login for there bot for our user pages
4- Contact Adsense Support Rep
5- Receive email if we did 1-3, answered we did
6- Email saying will fix with in week
7- Email saying 24 hours
8- Coverage jumped back to early Dec levels
9- Drank a bottle of champagne and had first good nights sleep in 45 days

The following 6 messages were cut out to new thread by engine. New thread at: google_adsense/4885692.htm [webmasterworld.com]
6:01 pm on Feb 5, 2018 (utc 0)

Does anyone suggest I block criteo and third party ads to get rid of pennies.

Also my site still experience the blank ad fill (how do you recommend I resolve this to 100% ad coverage all the time?)

Neoruscienta Welcome to Webmaster World.

how do you recommend I resolve this

See my post at the bottom of page 8 of this thread (last one on the page).

Yea. I contacted the Adsense support but yet to respond my message.

I just added media.net and got my personal Account Manager to do the customization for me, sonce I abandoned them due to critiques aroumd the web. The interesting thing is, Media.Net ads design on my blog: <snip> is genius and generates more CPM for me way better than Adsense.

But I cannot guarantee that I will have similar results with CPC if I move the ad below post title or mid-content. Why? MediaNet only pays for the second click on ads so I prefer my Adsense be there and make money with only CPM via MediaNet.

Just tired of Adsense harsh policy changes. Too frequent updates that don't make sense.

[edited by: engine at 12:43 pm (utc) on Feb 20, 2018]
[edit reason] Please see WebmasterWorld TOS [/edit]

Still can't figure out why my Adsense doesn't fill 100%. How long should I wait for the support to respond to my query?

The Dec. 18th issue with coverage/fill rate dropping significant amounts looks to be a sweeping change that the big G made to sites that they saw might be damaging to their advertisers. This seems to be a blanket move they did against a great number of publishers. In other words, if your site was impacted it's very probable you shouldn't have been. Simply contact adsense/adexchange and once you answer a couple questions they'll turn back on the fill rate.

This is still happening for me, and it's getting worse. Coverage is now down to 42%
Adsense "support" don't reply to messages. They just send a template response...
(None of which apply to me)

We detected that your AdX /Adsense account *DOMAIN NAME *is sending
a significant number of ad requests from URLs that are not crawled. Below
are some of the possible reasons why a URL might not be crawled:

1. You may be using complex parameters or encoded strings in your URLs
that are unique for each visit, instead of sending us the canonical URL,
which is easier to crawl
2. Your URL may represent newly available content which had not been
crawled before you sent ad requests. This is transient as your URL will
be
crawled shortly after your first ad request
3. You may be sending an incorrect URL to us because you are manually
sending an incorrectly formatted URL in your ad request
4. You may be sending the URL of an iframe with an ad instead of the URL
of the content page that hosts the iframe. (This typically applies to
larger publishers).
5. You may have limits on how often they can be crawled (trawler rejects
our crawl requests)

To avoid a potential revenue impact from this change, please consider the
following best practices for ensuring URLs can be properly crawled:

AdSense Publishers, see:

- About the AdSense crawler
<https://support.google.com/adsense/answer/99376>
- How to fix AdSense crawler errors
<https://support.google.com/adsense/answer/2381908>
- Display ads on login-protected pages
<https://support.google.com/adsense/answer/161351>
- Give access to our crawler in your robots.txt file
<https://support.google.com/adsense/answer/10532>

DFP and AdX Publishers, see Crawler Access
<https://support.google.com/adxseller/topic/6033466>.

Sincerely,

The Google AdSense Team

ad requests from URLs that are not crawled

Yes, this is like that since Adsense turned on their brand safety "protection". Now, for ads to show on a given page, this page has to be crawled and analyzed by the Adsense bot (not Googlebot).

A "human" visits the page => no ads served => the page is added to the Adsense bot TODO list => The Adsense bot visits the page => the page is analyzed => the next time a "human" visits the page, ads will show.

That's the theory, in practice, I have the impression that it requires more than one human visit to trigger the adsense bot crawling. And, after a moment, one week or two, if the page has not been accessed again, then the whole process resets.

Also, I have the impression that it depends of country of visitors as well as devices. If the page is crawled/analyzed by the Adsense bot, beacuse of the visit of an American on a desktop, ads will show for Americans using desktops, but not Americans using mobile, or British using anything. It looks like things are segmented too.

These pages are old. Written years ago but often visited. I originally posted in this thread way back in Jan.

Since around August I've been rewriting the site from html4 to html5. At first earnings shot up. That gave me incentive to carry on rewriting the site (even though it was killing my back, my eyes and hands) ... Then earnings started to drop again and coverage is dropping.

Adding canonical tags haven't helped - not that I need them for static (case sensitive) URLs