Can't edit blocks

Hi! I'm using DraftSight Professional 2021 x64 SP1 on windows 10. I uninstalled and reinstalled Draftsight recently and now I can't edit blocks. Usually I would double clic on it and a pop up would open so I could modify its attributes, but now nothing happens. Also, I can't edit components. The properties section only turns all blue and I have to escape to be able to do anything else. None of the layers are blocked and I tried on different projects and they all do the same now. How can I resolve this? Thank you for your help!