After installing the CONNECT Edition, beam force diagrams and stress plots may appear in black rather than in color. Other symptoms include displacement diagrams changing from red to black or labels using a very small font.
This only happens in certain cases depending on the order in which various STAAD.pro versions are installed and uninstalled.
Ensure that STAAD.Pro is closed.
Delete the folder "C:\Users\<User.Name>\AppData\Local\Bentley\Engineering\STAAD.Pro CONNECT Edition\Default". Restart the program and this folder will be created again. This should take care of the issue.
If license selection dialog pops up, make sure NOT TO choose the “Exit” button, rather click on the “Accept” button ( see picture below).
If “Exit” button is clicked, it may destroy the configuration settings again and one will have to repeat this step again to fix the problem.
The issue has been addressed in the STAAD.Pro Connect Edition Update 1 ( 21.00.01.12 ) .