Convert curve to mesh works no longer...

This is really strange… Yesterday, I converted a curve to a mesh and worked fine. But now, what I do that convertion, if you go to edit mode, there are no “grabbing points” or something… It’s like it has only object mode… Any ideas, please?

Show a screenshot or preferably add a link to your blend file. In edit mode are you in vertex select mode ?

I’m completely STUPID!!! I was in face select mode… Thanks a lot for your help…