I was finally able to open up those days this weekend. It shouldn't have to be that difficult. After trying for 30 minutes, I found out that by clicking on some dates that were already available and not changing them, I could go to blocked days and open them up. I never blocked them in the first place. I had all of March wide open, and one day last week I found a couple places where 2 to 4 days in a row were blocked. Still don't understand why I had to mess around with available days before I could make the changes.
Thanks, Steve