Admin cannot login to new drupal 8 site

I have just created a new drupal8 site for testing purposes and for some reason I cannot login with the admin password or username.

I tried changing the password in phpMyAdmin using MD5. That didnt work so I tried reinstalling the site and got the same problem. 

The site is on a Godaddy server and is in a subfolder. Standard settings. Simple installation.  The site appears to work though will not login.  

Anyone know the solution to this?

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