You don't have permission to access….

Hope someone can advise. Have recently been building a site using a temporary url until ready to change the nameservers and go live.

Because of an initial error in the setup (my fault!) had to amend the temp url to http://217.199.187.64/fifthwalltv.com (was originally using http://217.199.187.64/fifthwall.com which was incorrect).

Edited the functions.php by temporarily inserting:
update_option(‘siteurl’,’http://217.199.187.64/fifthwalltv.com’);
update_option(‘home’,’http://217.199.187.64/fifthwalltv.com’);

now removed.

This has given me access to edit the site and everything looks fine, except that when browsing only the home page is accessible. All other pages receive the 403 Forbidden message:
‘You don’t have permission to access /fifthwalltv.com/news/ on this server.’

HELP PLEASE. Thank you