Enter tracking number reference of Magento

ex.

Magento 1.9 Order Review No Button : Useful Links

stackoverflow.com

My solution was to download a fresh copy of magento and copy the files Review. php, review.phmtl and review.js to my site and it worked.

magento.stackexchange.com

enter image description here. Did you check the url that is coming on button? Seems you might have changed the default action on the button.

stackoverflow.com

Change the script in lotusbreath/onestepcheckout/onepage/review/info.phtml to: