First, make sure the CotranslatorAI Companion app is running in your Windows system tray. For full details, refer to Section 1-5-1 of The CotranslatorAI Guide at https://cotranslatorai.com/documentation/
If that doesn’t solve the problem, it may be due to a keyboard shortcut conflict with another program on your computer. Sometimes, other applications use similar or overlapping shortcuts, which can either prevent CotranslatorAI keyboard shortcuts from working or cause CotranslatorAI actions to be triggered unintentionally. Try changing the CotranslatorAI keyboard shortcuts (under Tools > Keyboard Shortcuts) to combinations that do not conflict with other programs.