Hi Mary, just gifted you for the Thomas books this morning via Paypal before coming here and seeing this thread, oops... I received gift monies through Paypal for all of my YDC listings yesterday, marked all as payment received and all the payment buttons turned from half green to all green, so I don't think it's a site wide issue. I'd contact support: support@ebid.net and let them know, they might be able to fix this.
Which reminds me, it's almost time to visit the P.O. and get my YDCs mailed out. Hope you get this sorted soon.
Best wishes for many sales to all,