In v0.26 of WordPress Google Form I changed how I was handling the custom confirmation page as many people had told me they didn’t like the redirection which caused a rapid page reload. The new mechanism does a partial page reload using Ajax so the effect is much more graceful but I have heard from several people that it isn’t working for them.
If you are having this problem, please let me know so I can figure what is going on as it is working fine in my development and testing area. I am still looking for a more graceful solution but the model I used before supporting multi-page forms simply won’t work with multi-page forms. Multi-page forms are too important and commonplace not to support them. Sort of a catch 22 for now but I am trying to find a viable alternative.