It seem they have paid to their signature campaign participants today https://bitcointalk.org/index.php?topic=1491815.msg17635005#msg17635005 so you may expect to get those withdrawal issue fixed by today. But in the meantime wait for reply from namworld. Have you contacted him on skype?
Unless that's part of the scamming project :/
Signature campaigns are often very independant from the original site promoted! There is a manager, sometimes funds are even escrowed etc...