Lightroom and Lightroom Classic Won't Install on my Mac

[Sabrican5FB4]

I have a MacOS Catalina (10.15.7) and I'm trying to install Lightroom and/or Lightroom Classic. But both apps won't install. In the cloud desktop app it shows "installing", but when it hits %99 the "install" button reapears. What am I doing wrong? What should I do? Thanks in advance!  

[kglad]

you have a license for which version?