Hi again
Firstly, your English is fine, thank you :-)
I note that your PC specification is at Laminar Research's minimum requirements, but as you have had X-Plane 11.30 running previously, I doubt that hardware is the issue here.
1. You stated above that you 'made a clean install of X-Plane 11.30 and everything worked OK', so is it possible for you to make this same clean install again?
2. When you get the 'BE ADVISED' message, did you click on the 'Understood' button and if so, what happened?
3. Your X-Plane Installer Log file suggests that X-Plane 11 launched successfully, so it may be worth having a look at the X-Plane 11 Log.txt file as well. Can you upload this?
4. Alternatively, it might be best to submit a bug report to LR, along with both log files as above.
Kind regards
Paul