Thank you for your feedback. I am sorry about the trouble you are experiencing and agree that is very different than before. However, we hope that you are able to work through this initial shock so that you can see how some of the new features can help you as well. More on that in a separate post.
Here are direct links for the tools that you reference:
There appears to be a broken link, which I have submitted for repair. I don't know how long this will take but I would expect that this will take no longer than 2-3 days.
http://www.analog.com/static/imported-files/eval_boards/EVAL_ADXL375_User%20Guide.pdf