>>Do I need to reinstall the whole thing all over?

 

No, you don't need to resinstall the whole DNN.

 

All you need to do is copying the license file to your root/project bin folder.

>>the editor does not show--as if I am still not licensed.

Did you get an error message?

I'v sent you another email. Please run the file I've attached on your server and tell me the result.