Thank you all for answers!
cd ~/.mozilla/abrowser/YOUR_UNIQUE_NAME.default/
bash: cd: /home/san/.mozilla/abrowser/YOUR_UNIQUE_NAME.default/: No such file
or directory
cd ~/.mozilla/abrowser/
:~/.mozilla/abrowser$ ls
f6ev4g1w.default-release installs.ini profiles.ini y760ypce.default
security.enterprise_roots.enabled is set to false
All other Preferences are open. Closed are only those in Pivacy & Security
--> Enhanced Tracking Protection
I reinstalled abrowser. Nothing changed - no warning no access to above.