My functions in the FeatureManager authoring tree have grayed out. It is also impossible to use certain functions such as material removal, for example. I believe this happened while trying to use the "Combine" function.
Do you have any idea where the problem comes from? Thanks in advance!
Functions are in a delete state. Select them, right-click and Undo delete status.
For features that are not enabled, this is normal, Solidworks does not detect features that have created a volume or surface. When you have undone the delete state, you will be able to use them again.
Totally agree with Yves.t; All your functions have been hidden. It may have been due to a mishandling of the first one that automatically hid the others...