Data not populating to thank you page

1)as soon as i am clicking on submit and when it redirecting  to thank you page it not populating data on that page it shows "wait till preparing data" ,  but even after an hour it shows same.

Were you using the code as advised in the mentioned guide to gather the submitted data on the thank you page?

If it's not working and is stuck at preparing the data then that could be a possible sign that there is a problem with the way you have it programmed currently. What do you have so far for this?