Can't login due to a loop of sorts

I have just moved a wordpress blog from one server to the other. I have imported the database, set the database details and added two lines at the bottom of the wp-config file to get it to work so I can log onto the backend to install the search and replace plugin. The lines are:

define(‘WP_SITEURL’, ‘https://www.example.com’);
define(‘WP_HOME’, ‘https://www.example.com’);

With the URL’s being the new url’s.

The old site was hosted with a different firm in a different way. This one is now hosted in a subdirectory where the other was on the main domain. Over time it will be moved to another domain.

When I try to log into https://www.example.com/wp-admin/ I get the login screen, but when I log in, it refreshes back to the login screen showing:

https://www.salesattitude.nl/newsite/wp-login.php?redirect_to=http%3A%2F%2Fwww.salesattitude.nl%2Fnewsite%2Fwp-admin%2F&reauth=1

All help appreciated.