I encountered this error when I’m running my Nuffnangs ads before, I don’t even have any idea why that error occurs. I’ve checked my blog URL as it is stated on the error that maybe my blog address is not correctly written but there is nothing wrong with my blog URL. Another options instructed on the error is to check if I pasted the code from add ads page correctly, in my case I was confident to say that my Nuffnang ads is placed correctly as it working before I encountered this error. Now I started to wonder why I encountered the error ("Error matching blog to blogger entry. If you are the owner of this blog, please check that there is no typo in your blog address and that you have pasted the code from the Add Ads page correctly.”) where every details seems to be correct. You may see tips below on how to fix this error.
Tips on how to fix and avoid the error:
As stated on error above, double-checked your blog URL if it was correctly spelled. Login your Nuffnang account then go to Blog Manager and click Manage Blogs. On Manage Blogs you can see your blog URL, see if it’s correct.
Double-checked if your ads is correctly pasted on their corresponding code, eg. Leaderboad, Large Rectangle and Skyscraper. To check if your ads are pasted correctly on its right place you may see these following codes on Nuffnang ads code.
http://synad2.nuffnang.com.ph/ss.js - ss stands for Skyscraper
http://synad2.nuffnang.com.ph/lb.js - lb stands for Leaderboard
http://synad2.nuffnang.com.ph/lr.js - lr stands for Large Rectangle
Lastly, make sure that you follow the instructions correctly on how to put Nuffnang ads on your site.
Just make sure that your Nuffnang ads codes are correctly place to avoid error on displaying ads. On Blogger layout preview it’s normal to see this kind of error coz it is only embedded page of your site, that why Nuffnang read your URL as incorrect and display those error codes.