There is currently a major issue with Requiem where the game will skip nearly the entirety of ACT 1. Please stay on version 2.0.0.0 until this issue is fixed.

To play 2.0.0.0 without the update message, disconnect from the Internet. The game can then proceed normally.

There are also other issues with the other 4 games that will be fixed soon as well. Stay on the versions you're at until all issues are fixed (you can disconnect from the Internet for the other 4 games as well).