We just got TeamViewer business through TechSoup for our non-profit organization. I clicked on the link and filled everything out, but the site asked for payment eventhough the total was $0.00. I went to paypal, however I got a message saying payment couldn't connect at this time. I clicked the link to try a different payment option, and now I am recieving a message saying the key is not valid, and is asking me to pay the full price. How can I get this resolved?