What is the difference between Architect and Creator?

I just purchased Architect 8. I have been using Architect 4 since 2010 and needed to upgrade to a new computer. I am finding limitations with 8 that 4 could do like print and merge many pages into one file. Is this a ppf Creator vs Architect issue? Did I buy the wrong one. I am really upset because I re purchased this software to print many files into one PDF. Plus I was promised a sales price of $43 for Architect Pro on checkout but my card was charged over $90 for the latest version that cannot do what version 4 can do.