Absolutely No Luck On Nite Flirt

I have had zero calls, and zero messages on Nite Flirt in the 2 weeks I have been on it. Every time I try and bid, it tells me: We're sorry, but your balance needs to be at least three times your max bid. I am so confused on how to use and work nite flirt. I have several listings. Any advice would be appreciated. As I don't know what I am doing wrong. Thanks.