OSX Catalina BBT and "Launch at start-up"

Each time i put BBT into the applications to be launched at start-up, it does work well only one time. At the second restart, BBT has disappeared from the list of the applications to be automatically launched at stat-up of the MacBookPro.
Normal?
Regards

OXS 10.15.3 (French)
BBT 3.332 (1511)
MacBookPro (13inch, 2019)

You need to enable launch on startup in the BetterTouchTool preferences.

Hi
Thks for speed answer.
Done
It works well
Regards
PhB