Lightroom issues after reinstalling from TimeMachine

My old Macbook Pro broke down so I had to reinstall my Lightroom 6 from TimeMachine.

At first glance the program startet, and I was able to browse an edit as normal, but the next day i suddenly recieved two error messages and now Lightroom won´t open.

I´ve tried to follow the links from the error messages but only end up at a site for bying or downloading a trial of the new CC app.

What to do? I´m not interested in paying for a monthly app when my old version should work out fine on the ¨new¨ Mac, but I´m not sure how to fix the problem either, especially since the program worked flawelessy the first time I tested it after reinstalling.

Message 1:

Adobe Application Manager, required to start your trial, is missing or damaged.

Please download a new copy of Adobe Application Manager from

http://www.adobe.com/go/applicationmanager.

Message 2: 

Adobe Creative Cloud, recuired to solve the problem is missing or is destroyed. You can try to fix the aplication to solve the problem. If the problem continues, you can download and install the new app from http://www.adobe.com/go/adobecreativecloudapp_no. 

Specs:

Macbook Pro 15 inch Mid 2015, OS Catalina 10.15.

2,5 GHz, Intel Core i7, 16 GB 1600 MHz DDR3 (No CD port)

Adobe Lightroom 6 (Originally installed from CD - Now reinstalled from TimeMachine)

Gratefull for any suggestions. 

Petter