Hi, y051313! First, a couple of questions:
  1. Which Reward Points plugin (and which version) are you using?
  2. Are any myDEBUG logs generated in your store's /logs directory?
  3. When you view your browser's console (normally by pressing F12 during a browser session, then looking for a "Console" tab), are there javascript and/or jQuery issues noted?
  4. Is the site publically available? If so, you can send me a link via PM and I can check a couple of things, too.


You can create me a one-page-checkout log file for this case by performing these steps:
  1. Log into your admin.
  2. Go to Configuration->One Page Checkout Settings; set the plugin's debug to "true" and make sure that the plugin itself is enabled.
  3. Place something "rewardable" into your cart, log in to the shop and go to checkout (so you're sitting on the OPC main page).
  4. Using your FTP program (or similar), go to your store's /logs directory and delete either all myDEBUG-one_page_checkout-*.log files or just the one associated with your customer id (as the last couple of characters in the file's name).
  5. On the storefront OPC main page, click the "Apply" button associated with the to-be-redeemed points.
  6. Go to the store's file-system and make a copy of the OPC log file that was generated; let me know via PM and I'll give you a direct email address to which you can send that file.