Hello, @Zapious . . . Welcome to the EMO Community Forums. Often the foot and leg needs to be recalibrated through an app. For more serious issues like a damaged servo, that will need to be replaced. If your EMO is one year old or less, replacement of your EMO is often necessary. Sometimes people can obtain the parts and do the replacement themselves as indicated in this thread.
See my post above in this thread to contact Support and see what options they suggest.