I have tested my booking form and often get this reason why I can't book.....If you want to book, correct the following:
Couldn't calculate rates for these dates. I don't seem to be able to find the reason. What should I be looking at?
What dates are you using? I see that you've got weekly prices in there and no nightly. That's fine, but I notice some of those are set to prorate and some are set to not prorate. The prorating ones will allow less than 7 nights based on your minimum number of nights and calculate that. If prorate is set to None, though, then it will only work for exact multiples of that rate length -- i.e. 7 nights.
If you do want to prorate, go and edit those seasonal rates and set 'em all to prorate.
Yes great, thanks Chris that was my problem.