OK? will test that in a moment and will report it that did not work.
Meanwhile please forward following
For global hotkeys, you need to enable a setting in the Mac system preferences.
Mac OS 10.9.x
- Open System preferences
- Security & Privacy
- Privacy tab
- Accessibility
- Enable TeamSpeak 3 or 5 Client
Mac OS 10.15.x
- Open System preferences
- Security & Privacy
- Privacy tab
- Input Monitoring
- Enable TeamSpeak 3 or 5 Client
(when list does not offer the + button then try to start the app from application folder.)