Update on this video
update @10:15
can't find revert to classic theme option
click ➜ customize

And then select ➜ Revert to classic theme option,
Select ➜ Edit HTML

now paste the code and click ➜ save

So now we have set up the redirection.
If you are facing any issues other than the one mentioned above. Please let us know in the comments section. We will try resolving it for you.
Cheers,
Website Learners team