systray-x: Do not work under Debian Buster

bash SysTray-X-0.1.4-xUbuntu_18.04-amd64-install.sh

Installing SysTray-X companion app to:
/home/user/.mozilla/native-messaging-hosts

Installing SysTray-X addon into all profiles listed in:
/home/user/.thunderbird/profiles.ini

Press any key to continue, Ctrl-C to cancel
Installing SysTray-X companion app...
Installing SysTray-X addon...
cp: cannot stat 'systray-x@Ximi1970.xpi': No such file or directory

Addon and companion app installation complete.
App en JSON config have been installed in: /home/user/.mozilla/native-messaging-hosts

Do not forget to install the Thunderbird SysTray-X Add-on
using the standard Thunderbird Add-ons / Extensions store !

Ok. I put xpi to /home/user/.thunderbird/user.profile/extensions and activate it into TB. But what next ? I don’t see tray icon. Minimize TB no tray icon again. Ok. I guess maybe need start SysTray-X by hand and do this. Now I see tray icon but no any reaction on new messages or clicking on tray icon or minimize TB or close TB(it just closes). And nothing in debug window.