It only takes a few moments to install Instant Retry on Magento 1.X. Here is how:
1. Go to your Admin panel, visit System > Magento connect > Magento connect manager
2. Log in with the same credentials you use to access your admin panel
3. In 'Direct package file upload', select the tar.gz file we gave you and click on 'Upload'
4. Drag and drop the ZIP of Zeppto's module that was sent to you into "Upload a module"
5. You're done! You've successfully activated Instant Retry. No configuration is needed