Thanks for the quick response!
It seems to work now.
For reference, the workaround I used was to go to Plugins > Editor > Paid Memberships Pro > paid-memberships-pro/includes/email.php, then comment out $content_type = ‘text/html’ (as below).
//change to html if not already
if( $content_type == ‘text/plain’)
{
//$content_type = ‘text/html’;
}
return $content_type;
