WordPress.com Sorry, we had a problem fetching your Reader subscriptions error and solution : Do you encounter an error message saying “Sorry, we had a problem fetching your Reader subscriptions” when trying to access your blogs registered at wordpress.com ?
Here is a simple solution to that problem :
Simply go to settings section of your browser and clear cache and cookies and then re-open your browser. Now you can access your blogs.
If you are still having a problem with that, leave a comment to ask for help.