Open the 1&1 site builder and click Insert Element in the menu on the right. Select Widget/HTML.
Paste the Code
Paste the POWr code into the text box, then save. Close the Settings window.
Preview your Site
You will see a message, but no POWr Online Store. Click on the Preview icon in the upper left corner to preview the site. You'll now be able to see your POWr Online Store.
Edit POWr Online Store
You're now ready to edit your POWr Online Store right in your site preview. Click on the Settings Icon to launch the POWr Editor, and save when you're finished.
You can also edit this plugin any time in your POWr account dashboard.