Help with Roof

[stevejo2k22]

It seems like we have rats in the house - can hear scratching on the ceilings. I've recently had the house refurbished (somewhat badly in areas) and found a gap between the facia and the wall. It's probably too large to caulk so does anyone have any ideas how I can fill it??

 

[Alastairreid]

25mm flat plate the same colour as your facing nailed to rafters before top coat of render.

 

[kp00110]

is that really where the rats would be coming in???