The bot works extremely well. One of the better options for Motherlode.
As with all bots use with caution and make sure if doing a long session to enable breaks and fatigue handler to minimize risk especially when mining as it is a highly flagged activity.
I have reached out but have not received any response. Staying still and moving the mouse around sounds like an issue coming from either an incompatible RuneLite plugin, or the fact OSRS was updated and the models were broken (this happens!).
If you ever want to try the bot again, let me know and we can walk through it together if you have any questions or concerns.