w/ out actually being able to see what you're doing, I would suggest first tweaking the fillet radius, trial and error style, until you get an aesthetically desirable result. Also double triple check the edges you're selecting. Many times the fillet dialogue windows have options that can be checked on and off. You can try playing w/ those as well.
When i use edge fillet, it shows Ribbon has stopped on slightly shatp edges. What should I do
w/ out actually being able to see what you're doing, I would suggest first tweaking the fillet radius, trial and error style, until you get an aesthetically desirable result. Also double triple check the edges you're selecting. Many times the fillet dialogue windows have options that can be checked on and off. You can try playing w/ those as well.