Seems like I dodged the same bullet with Cardpool. After 3 weeks, luckily, my card still had it's balance. I subsequently listed it on Raise. It was a fairly easy process to get it listed except for having to upload the requested documentation to Raise...

They asked for the following:
"If you have proof the card has been activated for 45 days, please provide images or receipts, or anything you can proving this using this link." and then after uploading the receipt, they still asked "could provide a receipt with the last 4 digits of the card."

After sending the receipt to them, my card listed and sold in less than 15 minutes. (I had listed it about $5 lower than all the other American cards on the site). I received payment in 4 business days. All in all, I was happy with Raise. Stay away from Cardpool.