Cannot import previous Library or Catalogue

[Andrew.Whybrow]

I have just starting to re-learn LC and installed a previous version only a couple of years ago. I used the Plug-In extras to convert non supported Apiture Library and it all worked well. No issue. Now that I have re-subscribe and cleaned my Mac up, installed fresh version of Adobe etc. I cannot import previous library/catalogue to LC. It's is all greyed out? See picture, any tips would be welcomedregarding the solution. Thanks

[dj_paige]

Are you trying to import PHOTOS or are you trying to import your previous CATALOG? Please be specific.

What steps are you trying to follow when you get to this issue? Please explain step-by-step.

[JohanElzenga]

You are trying to open a Lightroom (cloud) library in Lightroom Classic. A Lightroom Classic catalog has the .lrcat extension.