410367 Godaddy PHP Mail glitch etc

1.I have a newsletter script purchased from phpjabbers dot com that will send out the initial "thanks for subscribing" email but the newsletter messages are never sent out. I need that sorted out and working. 2. In the same newsletter script the import csv is working fine but export csv is not working and redirecting to an empty page. I am told its something with .htaccess but not sure. I need whatever it is fixed and working also. Please note that its all hosted on godaddy hosting.