Redirect loop on my testing host

I am building a website for a customer (Richards Meat Market) The new wordpress one was built on a test site (snydertesting)

The issue i am having is removed the data of the Richards meat market site from the httpdocs folder on the host (Plesk) and placed the zipped up version from the testing site there, un zipped it as i have done a thousand times (normally i use cpanel) but the customer didn’t want any down time. connected it to the database. but i then got a 310 error too many redirects. so I loaded up the original html site for the night (keep the customer with a site) as i realised i didn’t copy all hidden files from the testing site.

The issue i have now is the snydertesting site automatically redirects to the meat site. i can not for the life of me work out what i have done.

Pointing me in the right direction would be a great help.

obviously cleared cahce etc and i have also tried putting:
define(‘WP_HOME’,’http://example.com’);
define(‘WP_SITEURL’,’http://example.com’);

in the config file with obviously snydertesting.com (tried www. and without)

Help