Feedburner Counter shows the number of subscribers your feed has, even if the FeedBurner website is offline.
Make sure your server's safe_mode is ON. If it's not, contact your service provider to make this change. Make sure you read the instructions regarding the installation.
Your server must have the cURL library installed. Ask kindly if they can install it (they should know what that means).
Maybe your Feedburner feed isn't configured to inform the amount of subscribers you have. To fix this, go to Feedburner.com.
If you are using Google's new interface, select your feed, click on "Configure analytics" and make sure the options "Item views" and "Item link clicks" are checked. Save and retry.
If you are using the old interface, select your feed, select the menu option "Publicize", click on "FeedCount" and make sure the service is "Active". On that same page, click on the "Awareness API" menu item on the sidebar and make sure this one is also "Active".
If the problem persists, make sure you have cleaned your websites cache (specially if you are using a plugin such as W3 Total Cache or WP Super Cache).
Are you sure you place the tag correctly? It must exactly as shown under "Installation", with the single quotes and your FeedBurner URI.
Feedburner updates the counter less often than it updates the amount on their API. One day Google might make the counter real-time. Until then, there is not much we can do.
Sure. Just use
<?php $feedburner_counter = get_xc_feedburner_counter('XXXXX'); ?>.
Sure! I accept PayPal donations. Just head on to http://bit.ly/xctcc - any amount is much appreciated!
Go to this plugins WordPress page and on the right sidebar, click on the link in "Got something to say? Need help? Write a new topic."
I'll try to keep a constant eye over there to make sure any problem is solved quickly.