Hey all, not sure it has been discussed before, but I'm having trouble registering VGC (bought from Staples) online at giftcardmall

I have used this function before, but it hasn't been working for the past few days, which always shows "We are unable to process your request at this time. If you continue to receive this error, please contact Cardholder services by calling the number on the back of your card."

The card itself is fine and balance check is working fine as well. Have you guys had the same issue? Calling the number doesn't help as it never connects me to a rep..