The Readme lists a table of pinout changes for the Octopus Pro v1.1. It incorrectly shows that Motor4-EN has changed from PA0 to PA2; however it is actually Motor3 that has changed.
This is still an issue, just returned 3 boards to Amazon until a friend found this post. I guess BTT isn't that fussed until it starts to hurt the profit margins!
The Readme lists a table of pinout changes for the Octopus Pro v1.1. It incorrectly shows that Motor4-EN has changed from PA0 to PA2; however it is actually Motor3 that has changed.