To upgrade your 123-reg Ecommerce package, please do the following:
Log in to your 123-reg control panel.
Scroll down to the Ecommerce section.
Click on the Manage ecommerce plans option.
If you have more than one ecommerce package, click on the Manage button for the relevant package.
Click on the Upgrade link next to the Ecommerce package: option.
Click on the Choose button for the relevant package.
Follow the onscreen payment instructions.