All floors are defined as rigid basement floors.
The Complete Message:
All floors are defined as rigid basement floors. Therefore, dynamic analysis will not be applied. Please check the floor settings and change them if necessary.
These floors are given when analyzing after marking all defined floors as rigid floors.
When the OK button is clicked in the message, the Floor General Settings dialog will open. Review the definition of rigid basement in the dialog. Arrange the Rigid - X and Rigid - Y signs in accordance with the rigid floor definition.