cannot run giveaway > Likes and Comments

HELP! When I try to pay for my giveaway on AmazonPay, I get this message. "Buyer's session with Amazon has expired. The buyer must sign in before you render the widget." I have logged out and signed back in, tried a different computer, checked my Amazon account, all good there.

Librarians have nothing to do with giveaways. You'll need to contact Support for assistance.