301 redirect from the clients old URL not redirecting to new URL

Hi,

We created a site for a client and they have bought a new URL. The new site is live and published but when we search for the old site it’s still taking us to the old site even though we have entered a 301 redirect as follows: /oldsitegroupltd.com TO www.newsitegroup.com

This happens when we enter it into google search and when we enter the entire URL into the browser bar.

Occasionally on Safari it states site not found.

Help would be greatly appreciated.

Thanks
HC


Here is my site Read-Only: https://preview.webflow.com/preview/ccl-group-ltd?utm_medium=preview_link&utm_source=dashboard&utm_content=ccl-group-ltd&preview=0c05b058f48dc8f94a1be08136f47c22&mode=preview
(how to share your site Read-Only link)