Make sure the batteries are fresh. Low or dead batteries can affect mouse movement.
Clean the sensor with compressed air or a Q-tip:
NOTE: Take care in cleaning the sensor – the Anywhere Mouse MX sensor is sensitive to dust.
Relocate your mouse to a different location or move your mouse closer to the Unifying USB receiver.
If the above does not solve your problem, the issue may be caused by software. Please see Knowledge Base article 360023387793 for instructions on customizing your mouse settings.
If the above solutions do not resolve your problem, consult Knowledge Base article 13734 for instructions on contacting Logitech Technical Support.