If your referring to not being able to set the desired CI, as being you need to enter more characters for "Identity.CI ", then im having the same problem... Unfortunately i havent figured it out yet... hoping some of the dev guys could chime in.
Basically in australia many cell towers have a Identity.CI # of 6 or 7 digits and when you try to save it into Yate it doesnt allow it, is there a way around this??
btw im getting close to having it running on the Pi4 but its been a nightmare so far!!