The README file should help with tracking and toggles, but I'll explain here;
"Edit: Do the following in the RahiTuber program:"
For tracking, find the [TRACKING+CONTROLLERS] folder and open it to see the six CONTROLLER layers. The body layer should default to your global settings, but for the rest of them, open the Tracking settings and under -Mouse--- click the little refresh button beside the Neutral position and Distance Factor. This should realign things for your monitor. Save the file after making these changes so that they stick for the next time you open it.
If there's issues with the Body, you'll need to go to Preferences (should be at the top of the RahiTuber menu) and then Tracking. Same thing, hit the refresh button beside Neutral position and Distance Factor.
Finally, if the model needs to be resized or repositioned in general, you can open Canvas Settings near the top of the menu (under the New, Open, Save etc. buttons), and make adjustments based on your needs.