Where did you check phpinfo? If in the CW panel it's showing what version the CW Panel is using. Create a phpinfo.php and copy to the domains public_html and then call it yourdomain.com/phpinfo.php
To create a phpinfo file, open a plain text file, add the following lines, and save:
Filename: phpinfo.php
<?php
// Show all information, defaults to INFO_ALL
phpinfo();
?>
To change the CWP default version use PHP>Version Switcher