My first bid I bid on the MP-Loop-GP zone for 3.5* When I didn't get that bid I changed it to $75 but it would not let me bid again although I changed my bid. It then showed 3.5* and 4* checked off and shaded so I could not uncheck either. So I added the Michigan Ave zone, but when I bid $75 it said I could not bid because I needed to change my dates or star hotel or zones. I then exited off the site and went back on, tried to bid 3.5* and both zones at $75 and it said duplicate bid and I would have to wait 24 hours.