The website that accepts the EasyBid data has an expired certificate on their webserver. IE6 in Crossover 11 is now trying to process the certificate but the programming to do so isn't finished yet and so EasyBid can get stuck at this point. The earlier regedit hack to ignore certificates also doesn't work in Crossover 11.
A workaround is to downgrade to Crossover 10.2. You can find earlier versions of Crossover by going to http://www.codeweavers.com/account/downloads/ and click on the Archived Downloads tab. Replace the Crossover 11 app icon with this older version and then try EasyBid again and it should go through. In Crossover 10.2 IE6 has a hack to ignore certificates (since there's no programming to handle them) and that works around the webserver issue.
This problem should resolve on its own when the Easybid website renews the security certificate or in a later release of Crossover 11.x when more of the security certificate handling code is written.