To set a redirect up in Shopblocks go to Settings:
Manage Redirect Settings:
Once here you will be asked to add two URLs to the two available fields - "From" and "To".
From - In this field enter the URL of the page you wish to redirect from
To - In this field enter the new URL you wish the From address to navigate to
Then click Save in the top right to save the redirect.
If the redirect isn't instantly in place when you go to check - you may need to clear the cache on your browser.