The $PP_PATH was the first thing I thought might be wrong. Since this is an additional domain on my account (hosted on my main but using a dedicated URL) I thought that maybe the full path might be different or even the same as the original address but my host verified the path I am using is correct. I can log into phpMyAdmin and edit the database (that's how I changed full server paths since I can't access my admin panel). And the domain is transferred. I can access the site's generic HTML index page but when I try to go to index.php instead it is blank.