I bought LR6 via Amazon download link 11 month ago, everything was working fine.
Suddenly I could not start LR6 anymore. It started with the LR6 start screen and could not finish the start of the program.
I could not find any answers to my problems and I could not download LR6 via my amazon software account again, although it was just 11 months ago, otherwise I would have tried to install it again...
Thank You very much for helping me, Andreas van Orten.